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Coal Resource Recoverability
A Methodology

U.S. Bureau of Mines Circular 9368

Figure 3A. Linear regression analysis: continuous miner-normal productivity.

Figure 3B. Linear regression analysis: continuous miner-low productivity.

Figure 3C. Linear regression analysis: continuous miner-high productivity.

Figure 3D. Linear regression analysis: longwall productivity.
Figure 3-Linear regression analysis
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U.S. Department of the Interior, U.S. Geological Survey
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