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~' The str~p and deep-mined coal sector final demands were calculated directly from 1975 export production of metallurgical and steam coal as compiled from published state coal and minerals statistics and the Bureau of Mines Minerals Yearbook - Area Reports, 1976, and Mineral Industry Surveys, "Coal-Bituminous and Lignite in 1975." These figures tend to be higher than the corresponding interpolation between the final demands estimated by Udis, Howe and Krieder and LASL. The TGO of these sectors was determined by running the model to yield a consistent vector of TGOs. In the case of the Strip-Mined Coal Sector, most of the !GO value was determined by the estimates of activity in the Coal-Fired Steam Electric Production for Export Sector. Manufacturing - The five manufacturing sectors are: Food and Kindred Products; Lumber and Wood; Printing and Publishing; Stone, Clay and Glass Products and All Other Manufacturing. 1975 final demand estimates, with one exception, were made in the first two sectors via interpolation between the '70 and '80 final demand forecasts generated by the model from previous TGO estimates for 1970 and 1980. 1975 final demand e.~imates for Stone, Clay anc Glass Products in the Green region and All Other Manufacturing were also estimated in this way. The final demand for the other sectors of the manufacturing port.ions of the regional econom~es were estimated from interpolation between 1970 and 1980 final demand estimates from Udis, Howe and Krieder and LASL, respectively. Of the two interpolation approaches, the later interpolation generally provided a more conservative final demand estimate and was usually chosen when there was a substantial difference in the results via the alternative interpolations. In order to provide some sense of the differences involved, Table 2.6 presents the results obtained by the two methods for those instances where there were substantial percentage or absolute differences.