Summary of Findings The total value of shipments and receipts for the 22 establishments classified in mineral industries in Maine was $6.6 million in 1992 compared to $8.1 million in 1987. Value added by mining amounted to $5.0 million in 1992, and payroll in mining amounted to $1.4 million. All dollar figures included in this report are shown in current dollars for the years specified and have not been adjusted for inflation. Mineral industries employment in Maine was .1 thousand in 1992. This is a decrease of 50 percent from 1987. The nonmetallic minerals, except fuels, industry was the only mineral industry in the State.