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- Research methods and measures:
- Costs
- Document types:
- Reports of Investigations
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7/1/2000 - Reports of InvestigationsShort-dumping rather than edge-dumping might reduce dumping-related accidents, but many operators believe it is less cost effective. To evaluate this perception, NIOSH reviewed the costs of various dumping methods at waste and spoil piles.
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1/1/1982 - Reports of InvestigationsThree long horizontal holes were drilled from a directionally drilled surface hole at the Emerald Mine near Waynesburg, Pennsylvania. The purpose was to adapt the technique of directional drilling for use in draining methane from coalbeds.
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Content source: National Institute for Occupational Safety and Health, Mining Program