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of services

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on time results to our clients

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Coal Analysis

Hardgrove Grindability Index (HGI)

Hardgrove Grindability Index analysis is the ASTM method of determining the hardness of coal when pulverized for steam generation or size reduction. Grindabilities typically range on coal from 35 – 110. Harder and less grindable coal rates a smaller HGI index number.

Contact us today to set up a consultation about Hardgrove Grindability Index Coal Analysis in Kentucky, West Virginia, Ohio, Illinois, Florida, and Alabama.