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United States
Parkway Mine

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 Location:
6km E from Central City, Kentucky, United States

  Regional Office:
500 Cutler-Trico Road
Percy
Illinois, United States
62272
Phone  ...  Subscription required
Fax618-426-1155
WebsiteWeb
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Overview

StatusClosing / Closed
Mine TypeUnderground
Commodities
  • Coal (thermal)
Mining Method
  • Continuous
  • Room-and-pillar
Processing
  • Flotation
  • Dense media separation


Owners

Source:
CompanyInterestOwnership
Knight Hawk Coal, LLC. 100 % Direct
Upon the close of the Transaction, Knight Hawk will take control of Armstrong's ongoing operations.

Deposit Type

  • Sedimentary


Summary:


Mining Methods

  • Continuous
  • Room-and-pillar


Summary:

Armstrong has been producing coal at Parkway since 2009 utilizing continuous mining units employing room-and-pillar mining techniques.


Crushing and Grinding


Processing

  • Flotation
  • Dense media separation

Source: Subscription required

Summary:

The treatments we employ at our preparation plants depend on the size of the raw coal. For coarse material, the separation process relies on the difference in the density between coal and waste rock where, for the very fine fractions, the separation process relies on the difference in surface chemical properties between coal and the waste minerals. To remove impurities, we crush raw coal and classify it into various sizes. For the largest size fractions, we use dense media vessel separation techniques in which we float coal in a tank containing a liquid of a pre-determined specific gravity. Since coal is lighter than its impurities, it floats, and we can separate it from rock and shale. We treat intermediate sized particles with dense medium cyclones, in which a liquid is spun at high speeds to separate coal from rock. Fine coal is treated in spirals, in which the differences in density between coal and rock allow them, when suspended in water, to be separated. Ultra fine coal is recov ........


Production:

CommodityUnits2016201520142013
Coal (thermal) k tons 5001,1071,1251,347
Heat ContentBTU/lb11,76011,76011,76011,760
All production numbers are expressed as clean coal.


Reserves at December 31, 2015:

CategoryTonnage Commodity
Proven 6,011 k tons Coal (thermal)
Probable 2,822 k tons Coal (thermal)
Proven & Probable 8,833 k tons Coal (thermal)


Heavy Mobile Equipment as of December 31, 2015:
HME TypeQuantity
Continuous miner 4

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Corporate Filings & Presentations:

DocumentYear
Form 10-K 2016
Form 10-K 2015
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Aerial view:

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