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Coal Resource Recoverability
A Methodology

U.S. Bureau of Mines Circular 9368

Table 4.-Factors Influencing mine productivity

Surface mining conditions Deep mining conditions
Area of movement Roof and floor conditions
Ground slopes-dip of coal Methane liberation
Production needed Cutability.
Overburden stability Partings.
Seam thickness Dip of coal
Ground water-reclamation Seam height.
Overburden-coal interface Ground water,
Work force experience Production layout

Supervisors

 Width of face.

Maintenance force

Depth of cut.

Equipment operators

Working time at face.

Mining applications

Planned maintenance.

Development

Remote-controlled equipment.

Panel production

Continuous haulage.

Pillar extraction
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