All articles - Mining and Mineral Processing

The developed potash ores, including Central Asian ores, are mainly represented by sylvinites (KCI + NaCl), which serve as raw materials for the production of the main type of potash fertilizers, potassium chloride.

Yonuvchan qo‘shimchalar usuli bilan yengil vaznli olovbardosh g‘isht olishda koks va ko‘mir eng ko‘p ishlatiladigan qo‘shimchalardan ikkitasidir. Ularning partiya tarkibidagi hissasi 20 – 30 % gacha yеtishi mumkin. Ushbu materiallarning narxi 2-4 marta farq qiladi. Shu munosabat bilan bu komponentlar yordamida ishlab chiqarilgan mahsulot tannarxini pasaytirish imkoniyatini baholash, ularning xususiyatlarining o‘zgarishini hisobga olgan holda yengil materiallar xossalarini qiyosiy tahlil qilish maqsadga muvofiqdir. [1]

The ability to obtain valuable raw materials such as kaolin, metakaolin, quartz sand and obtain a number of materials necessary for the national economy by introducing the technology ofenrichment of mineral raw materials available in our republic, which meets the requirements of the time, was successfully tested in laboratory and semi-production conditions.

Subject of research: moleskin and efire alleged factions, ethyl and izoamile alcohols, cretonne alleged, foamy, copper-molybdic ore, spume.
Purpose of work: reception, study characteristic and using import substituting spume for flotation enrichments copper-molybdic ore.
Methods of research: physic-chemical and chemical tests, IR-spectroscopic, PMR- study, paper chromatography, mathematical and steady-state analysis.
The results obtained and their novelty: on base individual material, as well as secondary raw materials resource local chemical production is received row superficially an active material (PVA), explored their characteristic (spume, superficially-active, efficiency spume action under flotation enrichment copper-molybdic ore and others), characteristic solution, as well as possibility of the efficient practical application as spume under flotation an enrichment sulfide ore.
Practical value: synthesized PAV recommended for practical application under flotation enrichment copper-molybdic ore as efficient import substituting foamy reagent.
Degree of embed and economic affectivity: efficiency of the using synthesized PAV as foamy under flotation enrichment copper-molybdic ore practiced in condition JSC "Almalyk is blazed-metallurgical combine", are received positive results. Expected annual economic effect from introducing the development will form on reagent TMSB 900 mln.sum/year, and on EAFK 740 mln.sum/year, it will provide import substituting and spare exchange facilities of the Republic.
Field of application: is blazed-metallurgical industry.

Subjects of research: object of research arc empty different strongly compacted rocks Dzhcroj-Sardara deposit of phosphoresces.
Purpose of work: consists in moving different strongly compacted rocks by explosions borehole of charges at the expense of increase of efficiency of explosion based on redistribution energy saturation blown up horizon and change of character of interaction of charges.
Methods of research: the job is executed with application of a complex method of researches including theoretical generalization, experimental researches in industrial conditions with use of mathematical modeling, and also mathematical statistics and correlation analysis.
The results obtained and their novelty: the way of moving of compacted rocks by explosion raising a production efficiency of the directed explosions boreholes by charges blasting matter on dump is developed, which scientific novelty consists in use short boreholes of charges which arc taking place in strong inclusions for an effective utilization of their energy and differential of influence on a file in different strongly compacted rocks, expenses, ensuring decrease, for their splitting and moving to the produced space, on the basis of which the technique of their engineering account is developed and the patent №IAP 04242 from 06.09.2010 is received.
Practical value: the technique of definition of factor of dump is developed at moving different strongly compacted rocks by explosions boreholes of charges in industrial conditions and way of moving different strongly compacted rocks in internal warehouse by explosions boreholes of charges.
Degree of embed and economic effectivity: the developed way is introduced on dig area of Tashkura of the Dzheroj-Sardara deposit of phosphoresces of Navoi mining metallurgical combine. As a result of introduction the economic benefit at a rate of 505,172 millions sum per one year is received (112,3 sum on 1 m3 empty of compacted rock (in the prices of 2011)).
Field of application: mining industry.

Subjects of research: the mountain brown soil of Chatkal boisphcra reserve, Oktau parts of Nuratatau.
Purpose of work: identify the role of reliefe, climate and vegetation in both preserving diversity of mountain brown soil. While the gap essentially of priority of topography and climate, law of development and the interconnection, characterize genesis, morphology and propcrtic mountain brown soil.
Methods of research: field researches and analysis of soil arc conducted by conventional methods: by methods of UzSRIC (1963), by L.Tursunov (1988), the mathematic analysis by B.A.Dospckhov (1985).
The results obtained and their novelty: Natural factors of preserving diversity of the mountain brown soil of Chatkal and Nuratatau: first time scientific works is obtained about reliefs, climate's and vegetative Role also has been given charaktcristic of soil cover pedospheres of mountain.
Practical value: by the characteristics of the role of relief, climate and vegetation on vericty mountain brown soils and to develop recommendations for their conservation and efficient using.
Degree of embedded and economic effectivity: Preserving diversity of the mountain brown soil of natural factors that compile evidence based recommendations for the protection of their properties and fertility.
Field of application: Agriculture, Scientific researches, High education.

Subjects of research: slopes, natural slopes, landslide, state of stress strain, model of soil, Method of fined elements, retaining wall, efficiency, constructive solution.
The purpose of work: to study a state of the stress strain of slopes and slopes from the application of elastic-plastic models, eating, and the identification of optimal solutions of the constructive anti-landslide facilities.
Methods of research: based on the use of modem scientific positions of soil mechanics, foundation engineering and modeling theory, carrying out complex experiments in the laboratory and in situ, numerical modeling of clasticplastic models, finite element and simplex methods calculation.
The results obtained and their novelty: On the basis of laboratory and in situ experimental studies of regional soils, obtained basic qualitative regularities and quantitatively the results of deformation and strength. We propose a soil model, which describes the actual behavior of the vertical slopes of stress-strain state. And on the basis of these analytical and numerical calculations using the clastic-plastic models revealed the most rational solution of retaining walls.
Practical value: is the possibility of using the results obtained in the calculation a state of the stress strain and determining the degree of stability of slopes and slopes with complex geometric configurations. Recommended computed model soil allows determine more accurately of stress-strain state rate and pressure of the landslide slope stability and slope by numerical methods. Recommended of anti-slide protection activities and retaining walls for the effectiveness use.
Degree of embed and economic affectivity: a project for strengthening the slope on the Akhunbabaev street and angle retaining wall on the Shahi Zinda street necropolis in Samarkand sity, a program of "Calculation of natural slope stability, taking into account the variable humidity of loess soils".
Field of application: Design and construction.

Aim of the inquiry: Extraction to multifunction of technology of the enrichment of low-grade phosphorous orc with the use as flotation reagent waste of oil mill.
Methods of inquiry:For revealing the feature of phosphorous orc we studied its composition by means of chemical, mineral, phase and spectral analysis. For determination of phosphorus photo colorimetrical and method of besieging in the manner of magnesium ammonium phosphorous orc used. The Chemical composition of orc is defined bu the complexonomctric, permanganatometric, and photocolorimetrical methods. X-ray and phase analysis run for difraktometr DRON-05, spectrums removed on spectrometer UR-20.
The results achieved and their novelty: Optimum multifunction of technology of the enrichment low-grade phosphorous orc with the using as flotation reagent waste of oil mill and new flotation reagent "Fomol", permissible getting the standard concoction with the contents of P2O5 27-28% is exhousted.
Practical value: On the base of the research and hall-industrial tests multifunctional technology of the enrichment of low-grade phosphorous ore of Dzhcroy-Sardara deposit is exhausted, allowing to raise the contents P2O5 from 14,8% in orc till 26-27% P2O5 in concoction, as well as reduce the calcium module from 2,48 till 1,85.
Degree of embed and economic effectivity: Exhausted technology passed frogs hall-industrial test on concentrating equipment OJV "Ingichka experienced-methodical technological expedition".
Expected annual economic effect from introduction designed technologies on KPC NMMC will form 17,543 mln. sooms per 100 000 tons annum.
Sphere of usage: Mining-metallurgical and chemical industries.

Subject of research: polymeric water-soluble reagent on the basis of a carpet manufacture, a chisel solution, a weighting additive.
Purpose of work: creation of a chisel solution on a basis strongly mineral water, synthesizing of a new reagent for the stabilization of a chisel solution prepared on strongly mineral water.
Methods of research: studying physical and chemical and rheology properties of chisel solutions, static and dynamic pressure of shift of a clay solution, technological properties and water return of a chisel solution.
The results obtained and their novelty: for the first time the new polymeric water-soluble reagent is developed for a chisel solution on strongly mineral brine water. Features of properties of polymeric reagents as a regulator of chisel solutions and lower water returns arc established.
Practical value: the effective structure of a chisel solution on the basis of a new polymeric water-soluble reagent which allows using strongly mineral water is developed. Semi plants for reception of a new reagent arc made.
Degree of embed and economic effectivity: release of industrial party of a polymeric reagent for a chisel solution which has been introduced on chinks Surgil is carried out, Berdah etc. Economic cffcctiency from application new polymeric water-soluble reagent for 2005-2008 years make up more 850 millions sums.
Field of application: drilling of oil and gas chinks on the territory of Republic Uzbekistan.

Subjects of research: facilities of gathering, conditioning, transportation and oil storage; oil gathering points.
Purpose of work: reduction in capital expenditures for wells construction and decrease in losses of hydrocarbons by improvement of systems of gathering, conditioning, transportation and oil storage on the basis of in- depth study of oil properties
Methods of research: systematization of gathering, conditioning, transportation and oil storage schemes, depending on stages of fields development and an analysis of existing methods of AGMU placing on oil and gas and gas condensate fields, definition of oil losses' size at storage in open tanks.
The results obtained and their novelty: influence of combination of AGMU at one area on reservoir energy consumption and a size of capital investments in wells construction is established. A formula is offered taking into consideration possible oil losses more brimful in open time storages. A method defining oil losses is developed as well as a technical guidance for defining oil rheological properties.
Practical value: results can be useful in designing of construction and exploitation of gathering, conditioning, transportation and oil storage systems.
Degree of embed and economic effectivity: use of investigations results in designing of construction of oil and gas field Yuzhniy Kcmachy has allowed to lower expenses for equipment purchase and construction- and -assembling operations by 7034, 91 th. sum or by 27, 94% in comparison with traditionally used variant.
Field of application: design of oil producers’ construction, training on petroleum engineering

Актуальность работы. Нефтегазовая отрасль Республики Узбекистан формирует углеводородно-сырьевую базу на длительную перспективу путём открытия новых месторождений, опережающего роста запасов нефти, газа и конденсата над добычей, рациональной эксплуатации месторождений.
Бешкентский прогиб - составная часть Бухаро-Хивинской нефтегазоносной области - одна из самых перспективных на нефть и газ территорий, где сосредоточены значительные объёмы геолого-геофизических поисково-разведочных работ. Восточная часть Бешкентского прогиба характеризуется широким развитием разрывных дислокаций, к которым приурочены все открытые здесь месторождения нефти и газа.
Поиски тектонически-экранированных ловушек являются весьма сложным процессом. В северо-восточной части Бешкентского прогиба эти трудности усугубляются сложностью геологического строения нефтегазоносного комплекса, значительными изменениями мощностей, большим количеством разрывных нарушений. В этих условиях, для направленного поиска залежей нефти и газа в тектонически экранированных ловушках, необходима постановка комплексных исследований высокой детальности.
Анализ состояния проблемы изучения геологического строения тектонически-экранированных ловушек нефти и газа показывает, что отдельные методические вопросы рассмотрены недостаточно детально, в частности, слабо изучены специфические вопросы картирования этих ловушек по данным сейсморазведки. Требуется дальнейшее развитие и углубление разработки научных основ для формирования критериев поисков тектонически-экранированных ловушек с целью повышения эффективности поисково-разведочных работ.
Цель исследования. Обоснование эффективности поисков залежей углеводородов в тектонически-экранированных ловушках в Бухаро-Хивинской нефтегазоносной области на основе углублённого изучения теоретических предпосылок, критического анализа фактических данных по изучению роли разрывных нарушений в формировании нефтегазоносных ловушек, оценки информативности используемых и создания новых критериев, в разработке рекомендаций по эффективному ведению поисковых работ на перспективных объектах.
Научная новизна:
1. Обоснована оптимальная методика детального изучения генетических и морфологических признаков, благоприятных для обнаружения тектонически-экранированных залежей, а также зон их развития.
2. На основе глубокого изучения структурно-тектонических и литологических особенностей образования тектонически-экранированных нефтегазоносных залежей получены новые представления об определяющей роли влияния на них разрывных нарушений.
3. Разработан рациональный комплекс методических приёмов по прогнозированию тектонически-экранированных ловушек в сложных геологогеофизических условиях Бешкентского прогиба, включающий в себя корреляцию и расчленение разрезов; разработку детальной характеристики разрывных нарушений и определение характера строения приразломных блоков с целью выявления благоприятных экранирующих условий; разработку возможных моделей тектонически-экранированных ловушек и оценку их перспективности на нефть и газ.
4. Выявлены новые возможности применения сейсморазведки при картировании тектонически-экранированных ловушек УВ и критерии их поисков по сейсмическим волновым полям и доказана возможность выявления в Бешкентском прогибе значительного числа новых, в том числе, тектонически-экранированных перспективных ловушек.
Заключение
На основе выполненного анализа и переинтерпретации всех геологогеофизических материалов, с учётом новых данных, выполненных в диссертационной работе сформулированы следующие выводы:
1. Проведён анализ обширного теоретического, экспериментального и фактического материала, более полно рассмотрены и дополнены существующие представления о роли разрывных нарушений в формировании тектонически-экранированных ловушек нефти и газа.
2. Теоретически обоснованы новые возможности выявления тектонически-экранированных нефтегазоносных ловушек геофизическими методами в различных модификациях.
3. Впервые разработан рациональный комплекс методических приёмов по прогнозированию тектонически-экранированных ловушек в сложных гео-лого-геофизических условиях Бешкентского прогиба.
4. Разработаны новые и приведены в систему существующие критерии поисков тектонически-экранированных нефтегазоносных ловушек в северо-восточной части Бешкентского прогиба по материалам сейсморазведки различных модификаций.
5. В результате комплексной интерпретации геолого-геофизических данных на территории исследований выявлено 4 перспективных участка, в пределах которых прогнозируется 20 тектонически-экранированных ловушек: Шаркий Шакарбулак, Актунли, Шимолий Кумчук, Гарбий Гармистон, Куштепа, Гарбий Мезон, Гарбий Саратон, Шимолий Дуванбеги, Буталабу-лак, Ойнакул, Шаркий Муминабад и др.
6. Разработанные в диссертации методические и прогнозно-геологические предложения и рекомендации, частично внедрённые в производство, позволят расширить, углубить и поднять на качественно новый уровень прогнозирование тектонически-экранированных залежей в Бухаро-Хивинской нефтегазоносной области. Это обеспечит повышение коэффициента удачи в открытии новых месторождений и увеличение прироста запасов УВ, уменьшит число ошибочных заключений и количество непродуктивных скважин.

Subjects of research: Jurassic and Upper Paleozoic sediments of Samsk, Kosbulak depressions and the Kassarmin swell.
Purpose of work: specification of features of geological structure and definition of prospects of oil and gas content of the Samsk, Kosbulak depressions and the Kassarmin swell on the basis of generalisation of the new data of geophysical works and deep drilling with attraction of the existing information on adjoining territories for a choice of further directions of oil and gas searche works.
Methods of research: complex analysis, studying and ordering of materials of geologic-geophysical works, deep drilling and laboratory researches of core, and also studying and generalisation of all previous researches. Construction of series of maps, seismogeological sections and schemes.
The results obtained and their novelty: the geological structure of Jurassic and Pre-Jurassic sediments with estimation prospects of oil and gas content on basis of lithologic-facial is specified, structural and geochemical preconditions, within investigated territory are allocated zones, of possible oil and gas content on detection of HC congestions.
Practical value: directions of oil and gas search works on Jurassic and PreJurassic complexes on detection of oil and gas congestions are developed.
Degree of embed and economic effectivity: the developed recommendations on location deep wells will promote detection of oil and gas deposits and gain of HC stocks, and offers on statement of search seismic prospecting CDP-2D works on the allocated sites - to specification of geological structure and preparation of new structures for the subsequent input in deep drilling.
Field of application: at planning and carrying out oil and gas search works in Usturt oil and gas region.

The urgency and relevance of the theme of dissertation. Gold is mined in 72 countries, among which Uzbekistan occupies the 9th place with 103 production capacity tonnes/ycar. Gold mining in the world in 2015 increased by 0.33% and amounted to 2678 tons. Global stocks of deposits to easily extract and a high initial content of gold is now almost depleted and the development involved the extraction of difficult and complex orc processing. Therefore, to date, the current world market is experiencing a clear shortage of minerals.
High gold prices have created favorable conditions for the expansion of the mineral resource base and involvement in the testing of complex treatment of refractory gold sulfide-ore. The main reason for gold strength associated with fine particulate association with ferric sulfide gold (gold particle size is from tens to less than one micron) and therefore it is not dissolved by cyanidation conventional technology, even when grinding without the use of ultra-thin preparatory operations prior to cyanidation. Thin association of fine gold with iron sulphides in the ore and the presence of significant amounts of carbonaceous substances may occur simultaneously (especially persistent ore), which is particularly complicates processing technology.
In this regard, increasing the efficiency of processing of persistent and highly refractory gold ores through the development of technological and technical solutions aimed at maximum opening auriferous sulfides, and the combined technology of their processing, providing additional recovery of gold is an actual scientific problem facing modem gold mining industry and has great economic importance.
This thesis research is oriented on realization of the decree of the President of the Republic Uzbekistan PD-1442, December 15, 2010 «Priority on development of industry of the Republic Uzbekistan in 2011-2015», as well as in other legal documents adopted in this area.
The aim of the research work is the development of technological and technical solutions aimed at maximum opening gold sulphides, and development of combined processing technology, providing additional recovery of gold.
Scientific novelty of the research work lies in the following:
Based on the study of behavior of gold in the process of washing bio oxidation product, it was first established presence of gold in the sink counter current decantation in colloidal form and the dependence of their behavior on the pH of the medium. That case developed bio oxide technology of enrichment by reducing the irretrievable loss of gold (50%) during washing biological pulp;
The cause of the deterioration in clarifying thickeners CCD, which was the salt hydrolysis of Fe+3;
(Variation with pH by washing) in the liquid phase slurry to form a colloidal solution of ferric arsenate and oxysulfatc, leading to an increase in viscosity of the liquid phase of the slurry and decreasing the deposition rate of biooxidation product slurry fraction;
study foaming mechanism during biooxidation detected gold enrichment process (6-8 times compared with the flotation concentrate) by fractionating fine and colloidal gold by flotation factors parts carbonaceous slurry in the reactors;
investigated the kinetics of cyanide thiocyanates during biooxidation product and its participation in competitive adsorption with a cyanide complex of gold and the dynamics thiocyanates content changes depending on the concentration of sodium cyanide and time (10-12 hours), after which the change of its content does not depend on the length process. It is also found that the rate of cyanide leaching of gold is higher than the rate of thiocyanates;
based on the study of the behavior of ion exchange resin in the process of sorption cyanidation products bio-oxidation reduction set sorbent properties after successive cycles of «saturation - regeneration» by poisoning his thiocyanates, which leads to a dynamic increase in the gold content in the liquid tails sorption and reduction of its extraction;
based on the results of theoretical and experimental studies on the state of thermo-chemical processes occurring in the process of bio-oxidation product of oxidizing roasting, set the temperature which determines the role of the quality of the resulting calcine - at a temperature of 570-600°C the degree of extraction of gold is higher than at 650-743°C. This is because at 650-743°C results in the formation of fast films preventing cyanidation of gold.
CONCLUSION
On the basis of the research on a doctoral thesis on «Scientific and technical efficiency principles for refining of refractory and highly refractory of auriferous ores» provided the following conclusions:
1. According to the study, gold properties in the process of washing, the bio oxidation product is first established the presence of gold in the sink of counter current decantation in colloidal form. The dependence of behavior on the pH of the medium on which developed bio oxide enrichment technology by reducing the irretrievable loss of gold (50%) in biological pulp during washing.
2. The reason of deterioration of clarification countercurrent decantation thickeners with salts of Fe+3 hydrolysis (with a change in pH by washing) in the liquid phase slurry with the formation of colloidal solution of ferric arsenate and oxy sulfate, which led to an increase in viscosity of the liquid phase of the pulp and reducing the deposition rate sludge of bio-oxidation cake fractions has been found out.
3. A study of the mechanism of foaming has been observed during the bio oxidation, the process of gold enrichment (6-8 times compared with the flotation concentrate) by fractionating fine and colloidal gold by flotation factors parts carbonaceous slurry reactors has been noticed. A method for processing the foam product, based on the sorption cyanidation gold at higher concentrations of sodium cyanide, which is the most effective compared to defoaming process in reactors.
4. The kinetics of formation of thiocyanates in the process of bio-oxidation cyanidation of products and its participation in the competitive adsorption of gold from the cyanide complex have been studied. Theoretically and experimentally substantiated set content change of thiocyanates cyanidation process depending on the concentration of sodium cyanide and time have been proven. Time for complete formation of thiocyanates is not dependent on the concentration of sodium cyanide, and is 10-12 hours, after which no change in its content depends on the process time. It is also found that the rate of cyanide leaching of gold is higher than the rate of formation thiocyanates.
5. On the basis of studying the behavior of ion exchange of resin in the process of sorption cyanidation of bio-oxidation product is installed after the reduction of the sorbent properties of cycles «saturation - regeneration» by poisoning his thiocyanates, which leads to a dynamic increase in the gold content in the liquid tails sorption.
6. Research has shown the influence of the concentration of thiocyanates saturation of different gold sorbent (resin, coal). In terms of direct cyanide leaching bio-oxidation products concentration of thiocyanates is up to 5 g/1, which is the main reason for the low saturation gold sorbents. Also found that one of the universal ways biological pulp conditioning is oxidative roasting, prevents the formation of thiocyanates cyanidation.
7. On the basis of theoretical and experimental research of thermochemical processes occurring under oxidative firing bio-oxidation product, set temperature determining role in the quality of the cinder. It was determined that at a temperature of 570-600°C extraction of gold higher than 650-743 ° C. This is explained by the fact that at 650-743°C results in the formation of fast films preventing cyanidation gold.
8. Developed and industrialized the combined technology of refractory and highly refractory gold orcs and concentrates containing carbonaceous material, using oxidizing roasting. At the initial stage of oxidation of flotation concentrate bio-oxidation is carried out under the scheme: opened sulfide gold, a significant part of the arsenic dissolved, transferred to the solid state in the form of insoluble scorodite (FeAsO4). Then bio-oxidation product with a low content of arsenic is exposed to oxidizing roasting, in which the carbonaceous gold opened, oxidized remaining sulfide sulfur, destroyed products of metabolism of microorganisms, oxidizing roasting product is directed to sorption cyanidation of gold from pyrite cinders.
9. In introducing the combined technologies of processing and highly resistant refractory gold ores and concentrates, with the use of bio-oxidation product of oxidizing roasting is established that the firing of the product of the charge and Daugyztau and Kokpatas orc deposits in the ratio of 60:40 at a temperature of 600°C for 2 hours and subsequent sorption cyanidation cinder enhances extraction of gold from 73.3 to 82.5%, decrease in consumption of sodium cyanide 2.5 times, reduction Thiocyanate concentration in the liquid pulp phase from 5000 mg/1 to 16.
10. The industrial precious metals recovery technology by improving the technology of sorption cyanidation leaching bacterial product on the basis of circuit testing have been developed and acquired which provide input for the design and subsequent transfer node sorption cyanidation of bio-oxidation product in the scheme of «carbon in pulp».
11. In experimental-industrial conditions of the off-balance sulphide orc gold extraction technology in Kokpatas by heap leaching with continuous bacterial extraction in the order of 50% (versus 25.7% in direct cyanidation) have been developed and tested.
12. The existing scheme and combined technology of processing of refractory and highly refractory gold ores arc introduced at HMP-3 of the State Enterprise «Navoi Mining and Metallurgical Combine» have been developed and improved. As a result of significantly increase of through extraction and annual gold production while maintaining the existing volume of orc processing, reduced the cost of the manufactured product and get the actual total economic impact of 222.2 billion sums per year (prices of 2016).

The aim of the research work distinguish the difference between the sources of pollution of soils of desert region of the southern region of Uzbekistan by oil and oil products, and to develop biological treatment method.
Scientific novelty of the research work:
for the first time the distances on the pollution sources of several soil types of arid zone polluted by oil and oil products and the differences on soil profiles were revealed;
changes in the organic and anthropogenic carbon, and humus contents of the soils polluted by oil and oil products were studied;
created recultivation technology of combined application of the strains of MFD-100 Pseudomonas stutzeri, MFD-200 Pseudomonas caryophyllis, MFD-5000 Bacillus subtilisfox the arid zone soils polluted by oil and oil products;
developed the individual factors, algorithm and stages of recultivation of the soils polluted by oil and oil products, and done periodization of recultivation process;
rehabilitation parameters and coefficients of soil fertility after recultivation of the soils polluted by oil and oil products were developed.

The aim of the research work is improvement of prospecting works technique and increase of gold ore deposits reserves estimation reliability of three geological and industrial types on the basis of studying of placement regularities, conditions of a bedding and morphological features of ore bodies taking into account definition of the factors influencing reliability of estimation of reserves.
Scientific novelty of the research work:
for the first time for three geological and industrial types of gold deposits of Uzbekistan (gold-quartz, gold-sulphidic-quartz and gold-sulphidic) the it is developed the systematization defining on the basis of regularities and placement conditions technique of prospecting works and reliability of their results;
it is proved that the studied gold ore objects have high variability of prospecting parameters and different degree of the counted stocks reliability;
in a section of 7 gold ore deposits of 3 geological and industrial types on the basis of experimental data the basic elements (parameters) of a technique of prospecting works - prospecting networks, distance between developments, geometrical properties, approbation parameters, optimum prospecting method and estimation of reserves are quantitatively proved;
for the first time in Uzbekistan on the basis of application of GGIS-technologies for estimation of reserves it is shown increase of efficiency of prospecting works, increase in productivity and efficiency of estimation of reserves on average for 30%;
for the first time it is developed on the example of deposits of Uzbekistan the improved "Methodical instructions on comparison of the prospecting data and development data of solid minerals deposits", and also "Methodical recommendations about an assessment of presentability and reliability of approbation of ore deposits".