doe eia m060 2006 coal market module of the national energy modeling system model documentation april prepared by and electric power division office integrated analysis forecasting information administration contents executive summary v list acronyms vii part i production submodule 1 introduction statement purpose archival citation contact 2 organization scope 3 objectives rationale 9 theoretical approach underlying a review other supply models 15 4 structure 19 step calibration convert regression equation into curves construct function for input to distribution 21 appendices abstract 23 b detailed mathematical description 27 c inventory data parameter estimates outputs 35 d quality estimation 47 e bibliography 55 f program availability 57 tables regions types used in nems user specified