laboratory analysis, mapping, study of crack, influence of water, condition and geology of hydrology.
Some studies of geo-technique which was often conducted in mining industry for example: analysis and monitoring of bevel stability, audit of risk
analysis and geo-technique, buttress audit and design, model and characterization of rock period rock mass, and surface stabilization of land; ground, geo-
technique criteria for design mine and study of geo-technique for feasibility study.
2.1.1.4. Hydrogeology Study
Suyartono 2003 states that study of hydrogeology depends of the applying method and matter which is obliged to be conducted for the agenda of
knowing underground hydrology and surface hydrology, drying of mine, drainage system, quality of water, porosity, zone of aquifer, water captured area, and mine
water management.
2.1.1.5. Feasibility Study
Scope in compilation of feasibility study cover some aspects such as technical aspect, work health and safety K3 aspect, environmental aspect,
economic aspect, social law aspect, mined out aspect, and other aspects Suyartono, 2003.
2.1.1.6. Mine Planning
Planning is determination of clauses, which must be fulfilled from technique site and economics and also technical execution sequence from various
sub-activities, which must be executed for the agenda of reaching activity its target Suyartono, 2003. Furthermore Suyartono 2003 explain referee to the
planning needed some factors as considerations for example feasibility study,
amount of mine and reserves, stripping ratio, maximum boundary deepness of mine, cutting grade off, influence of geology structure, ladder dimension, slice
system, dig materials value, production cost, and determination of medium activity of mine.
2.1.1.7. Processing Purification
Processing and or purification are important aspect here in after mining. This aspect is important also to be planned and executed correctly because how
optimal even also their execution of mining, if processing process purification making that dig materials not saleable sold, for or less optimal and effective,
hence earnings of result activity of mine as a whole also become less optimal. For that, regarding process to get the creation and maximizing of it make-up of
maximal added value is the intention of government and company Suyartono, 2003.
2.1.1.8. Metallurgy Study
Metallurgy test-drive require to be conducted in order to know how to extract metal from ore, which have been processed before, including the
equipments and the corrected chemical reagent. For these mentioned hence factor the needed is to know the nature of ore cover specific gravity, hardness, item
measure, and others Suyartono, 2003.
2.1.1.9. Bulk Sampling
