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- W133665150 abstract "In 1979 coal production in the US totaled 777.9 million short tons, the highest annual amount ever produced, and an increase of 17.44% over the 662.3 million short tons produced in 1978. Underground mines produced 316.4 million short tons in 1979, up 32.40% from the 239.0 million short tons produced in 1978. Surface mines produced 461.4 million short tons in 1979, an increase of 9.00% from the 423.3 million short tons produced in 1978. In 1979 the average mine price (f.o.b. mine price) of all coal produced rose 8.51% to $23.75 per short ton from $21.89 per short ton in 1978. At underground mines the average mine price increased 5.58% to $32.76 per short ton from $31.02 per short ton in 1978, while at surface mines the 1979 price was $17.58 per short ton, an increase of 5.05% over the 1978 price of $16.73 per short ton. The average number of miners working daily in 1979 was 227,297, a decrease of 3.89% over the 1978 average of 236,501 miners. In 1979 productivity measured as the ratio of short tons produced to direct labor hours worked was 1.81 short tons per miner hour, a 3.02% increase over the 1978 productivity figuremore » of 1.76 short tons per miner hour. Underground mine productivity increased 9.69% from the 1978 figure of 1.03 short tons per miner hour to 1.13 short tons per miner hour in 1979. Surface mine productivity increased 5.50% from the 1978 figure of 2.92 short tons per miner hour to 3.08 short tons per miner hour in 1979.« less" @default.
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- W133665150 date "1981-04-30" @default.
- W133665150 modified "2023-09-23" @default.
- W133665150 title "Coal production-1979: Energy data report. [By state]" @default.
- W133665150 hasPublicationYear "1981" @default.
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