Factors that influence the selection of mining method (Morrison and Russell, 1973; Boshkov and wright, 1973)
1. Special characteristics of the sediment
* Size (dimensions: height or thickness)
* Shape
* Attitude (dip)
* Depth
2. Geological and hydrological conditions
* Mineralogy and Petrology
* Chemical composition
* Sedimentary structures (folds, faults, etc.)
* Weak field (thick, fracture, etc.)
* Uniformity
* Ground water and hydrology
3. Geotechnical properties (soil mechanics and rock mechanics)
* Elastic properties (strength, elastic modulus, etc.)
* Plastic behavior
* State voltage
* Consolidation, kompaksi and competent
* Other traits (weight content, porosity, permeability, etc.)
4. Economy
* Backup
* Production
* Mine life
* Productivity
* Comparison of the cost of mining for a suitable mining method
5. Technology
* Obtaining mining
* Dilution
* Flexibility methods to changing conditions
* Selectivity methods for ore and waste
* Concentration or dispersion of work
* Capital, labor and mechanization intenstas
6. Environment
* Underground Control
* Decrease in surface soil
* Atmospheric Control
* Strength work
* Effects of pollution generated.
Mining benefits open
1. The cost of mining each ton of material mining relatively cheap (because it does not require stopping, ventilation and lighting)
2. Working conditions are relatively more secure and widely
3. Large equipment is used more freely so that production is relatively large.
4. Mining recovery (acquisition of the mine) were greater, while reserve boundaries can be seen clearly.Security, regulation and control easier.
Mining losses open
1. Working conditions affected by climate / weather, example : rain reduces equipment and employee Productivity
2. The depth of excavation is limited, because it is bound by "stripping ratio".
3. The problem of environmental destruction / land use is more visible.
1. Special characteristics of the sediment
* Size (dimensions: height or thickness)
* Shape
* Attitude (dip)
* Depth
2. Geological and hydrological conditions
* Mineralogy and Petrology
* Chemical composition
* Sedimentary structures (folds, faults, etc.)
* Weak field (thick, fracture, etc.)
* Uniformity
* Ground water and hydrology
3. Geotechnical properties (soil mechanics and rock mechanics)
* Elastic properties (strength, elastic modulus, etc.)
* Plastic behavior
* State voltage
* Consolidation, kompaksi and competent
* Other traits (weight content, porosity, permeability, etc.)
4. Economy
* Backup
* Production
* Mine life
* Productivity
* Comparison of the cost of mining for a suitable mining method
5. Technology
* Obtaining mining
* Dilution
* Flexibility methods to changing conditions
* Selectivity methods for ore and waste
* Concentration or dispersion of work
* Capital, labor and mechanization intenstas
6. Environment
* Underground Control
* Decrease in surface soil
* Atmospheric Control
* Strength work
* Effects of pollution generated.
Mining benefits open
1. The cost of mining each ton of material mining relatively cheap (because it does not require stopping, ventilation and lighting)
2. Working conditions are relatively more secure and widely
3. Large equipment is used more freely so that production is relatively large.
4. Mining recovery (acquisition of the mine) were greater, while reserve boundaries can be seen clearly.Security, regulation and control easier.
Mining losses open
1. Working conditions affected by climate / weather, example : rain reduces equipment and employee Productivity
2. The depth of excavation is limited, because it is bound by "stripping ratio".
3. The problem of environmental destruction / land use is more visible.
