2013 US Labor Energy Section k
2016 8 16 1 Metric tons used to measure labor efficiency are an equivalent ton measure composed of 85 clinker production plus 15 finished cement production Grinding only and white cement plants not included 1972 Change Change All Plants 7.436 4.703 4.641 4.535 4.453 4.479 4.402R 4.432 40.4 0.7
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