Coal production and distribution
Minemouth coal prices
End-use coal prices
Coal exports
Transportation rates
Coal quality by source, destination, and end-use sector
World coal flows

Coal demand
Interest rates
Price indices and deflators
Diesel fuel prices
Electricity prices

Base year productive capacity, capacity
  utilization, prices, and coal quality   parameters
Contract quantities
Labor productivity
Labor costs
Labor cost escalators
Domestic transportation costs
International transportation costs
International supply curves
International coal import demands
Demand for U.S. coal imports