Source: Press release from Matrix Design Group 2008-08-07
URL: http://www.prcompass.com/Mining_Meta...

Excerpts of interest:

Since 2006, METS systems have been tracking workers and machines underground across the United States. METS is the leading underground tracking system in the USA with over 5000 tracking tags in production use every day and representing the largest production tracking installations in the US.

Purchase orders for METS 2.1 systems have been received throughout West Virginia and other states from many leading mining companies such as Newtown Energy, Foundation Coal, Patriot Coal, and Alliance Coal. METS is distributed and supported by Delta Electric of Logan, WV, Carroll Engineering Company of Harlan, KY, and Pillar Innovations of Morgantown, WV.

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Source: 10-Q: ALLIANCE HOLDINGS GP, L.P. (May 8, 2009) [Note: Alliance Coal and Matrix Design Group are part of Alliance Holdings]
MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Excerpts of interest:
References to "Alliance Coal" mean Alliance Coal, LLC, the holding company for the operations of Alliance Resource Operating Partners, L.P.
Other and Corporate segment includes marketing and administrative expenses, the Mt. Vernon dock activities, coal brokerage activity, Mid-America Carbonates, LLC ("MAC"), Matrix Design Group, LLC ("Matrix Design") and certain properties of Alliance Resource Properties.
Other sales and operating revenues.
Other sales and operating revenues are principally comprised of Mt. Vernon transloading revenues, products and services provided by MAC and Matrix Design, and other outside services. Other sales and operating revenues increased to $6.0 million for the 2009 Quarter from $3.7 million for the 2008 Quarter. The increase of $2.3 million was primarily attributable to increased revenues from transloading revenues and Matrix Design product sales.

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About Newtown Energy (This is a private company so I wasn't able to find much information about it.)
> Eagle Mine (Non-Union) in West Virginia - 164 employees
> Coalburg No.1 Mine (Non-Union) in West Virgina - 98 employees

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About Patriot Coal
Patriot Coal is the third largest coal producer and marketer in the eastern United States, with operations and coal reserves in Appalachia and the Illinois Basin. We and our predecessor companies have operated in these regions for more than 50 years.

In 2007, we sold 22.1 million tons of coal, of which 77% was sold to electric utilities and 23% was sold to domestic and global steel producers.

In July 2008, we acquired Magnum Coal Company and nearly doubled our production base.

Our operations consist of 22 company-operated mines and numerous contractor-operated mines serviced by sixteen coal preparation facilities, with one in northern West Virginia, 12 in southern West Virginia and three in western Kentucky.

Source: http://www.patriotcoal.com/operation...
Operations in Northern Appalachia
> Federal Mine
Operations in Central Appalachia
> Apogee Mine
> Big Mountain No. 16 (Union) in West Virginia - 148 employees
> Blue Creek Mine
> Campbells Creek Mine
> Hobet Mine
> Jupiter Mine
> Kanawha Eagle Mine
> Panther Mine
> Remington Mine
> Rocklick Mine
> Samples Mine
> Wells Mine
Operations in the Illinois Basin
> Highland No. 9 (Camp No. 1) (Union) in Kentucky - 369 employees
> Dodge Hill No. 1 (Union) in Kentucky (Non-Union) - 163 employees
> Bluegrass Mine

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About Foundation Coal
Foundation Coal and its affiliates use innovative, advanced mining technologies and expertise to produce coal at a low cost, which in turn is passed on to the consumers of electricity in the United States.
We are the fourth largest coal producer in the United States, based on tons produced. We are doing our part to ensure America is economically energized, keeping our nation’s energy as our focus.

Source: http://www.foundationcoal.com/

Operations in Northern Appalachia
> Cumberland Mine
> Emerald Mine
Operations in Central Appalachia
> Kingston #1 Mine
> Kingston #2 Mine
> Rockspring Mine/Camp Creek (Char-Coal No. 1) (Non-Union) in West Virginia - 253 employees
> Paynter Branch Mine
> Pax Mine
Operations in Southern Powder River Basin
> Belle Ayr Mine
> Eagle Butte Mine

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About Alliance Coal (ALRP-NASDAQ)
Alliance Coal, LLC, our operating holding company, is a diversified producer and marketer of steam coal to major United States utilities and industrial users. It is the fifth-largest coal producer in the eastern United States. Operations include mining complexes in five states - Illinois, Indiana, Kentucky, Maryland and West Virginia - and a rail-to-barge loading terminal located in Indiana.
The headquarters of ARLP are in Tulsa, Oklahoma. A centrally-located operations support office is in Lexington, Kentucky.

Source: http://www.arlp.com/

Operations in Northern Appalachia
Our Northern Appalachian mining operations are located in Maryland and West Virginia. We have approximately 240 employees and operate one mining complex and have one mining complex under construction in Northern Appalachian. We also control undeveloped reserves in West Virginia and Pennsylvania.
> Tunnel Ridge Mine in Pennsylvania (under development)
> Penn Ridge Mine in Pennsylvania (under development)
> Mettiki Mine in Maryland
Operations in Central Appalachia
Our East Kentucky region operations are located in the Central Appalachia coal fields. Pontiki and MC Mining, the region's mines, produce low-sulfur coal. About 530 employees are involved in Central Appalachian Operations.
> MC Mining No.3 (Non-Union) in Kentucky - 234 employees
> Pontiki Mine in Kentucky
Operations in the Illinois Basin
Illinois Basin mining operations produce high-sulfur coal from the River View, Dotiki, Warrior Coal and Hopkins County Coal mines in western Kentucky, and from the Pattiki mine in southern Illinois. Low-sulfur coal is produced from the Gibson County Coal mine in southern Indiana. Approximately 2,025 employees work in the region's five mining complexes.
> Pattiki Mine II (Non-Union) in Illinois - 277 employees
> Dotiki Mine (Non-Union) in Kentucky - 364 employees
> Warrior (Cardinal) Mine (Non-Union) in Kentucky - 257 employees
> Hopkins Mine in Kentucky
> River View Mine in Kentucky (under development)
> Gibson South Mine in Indiana (under development)
> Gibson Mine (Non-Union) in Indiana - 243 employees
> Elk Creek Mine (Non-Union) in Kentucky - 206 employees