[This listing of coal mines and coal companies has been researched and complied from various sources by Raymond A. Washlaski, Historian: newspaper articles, Pennsylvania Bureau of Mines Reports, county histories, township histories, Pennsylvania Geological Survey reports, topographical maps, personnal accounts of coal miners, etc., etc.]
Very few coal company employee records exist today.  Most Coal Company employee records have been lost or destroyed after the mines were closed. If you have mine records or know of the location of coal company employee records please let us know.

Your help is needed to preserve our coal mining heritage.
Please donate any mine records, mine maps or copies of them, pictures of the mines, pictures of miners, stories about the miners, mine memorabilia, books on mining, or tax deductable monetary donations to:
The Coal & Coke Heritage Center,
Penn State University Fayette Campus,
PA Rt. 119, P.O. Box 519, Uniontown, PA 15401

Oak Grove, Ligonier Twp., Westmoreland Co., PA
See: Seger No. 1 Mine, Oak Grove, Ligonier Twp., Westmoreland Co., PA
        Seger No. 2 Mine, Oak Grove, Ligonier Twp., Westmoreland Co., PA

Oak Grove Mine
(North Side Mine) (ca.1853-1920's), located in the hill north of the Pennsylvania Railroad Station, at Irwin, Larimer, off PA Rt. 993, Irwin, North Huntingdon Twp., Westmoreland Co., PA
Owners: (ca.1853-1854), Coleman, Hileman & John Scott Company,
              (ca.1854-1920's), Westmoreland Coal Company, Irwin, PA
              [The Oak Grove Mine, Irwin, PA was later renamed North Side Mine]

Oak Ridge Mine
(Oakridge Mine)
See: Oakridge Mine, Upper Whyel, near Yukon, Sewickley Twp., Westmoreland Co., PA

Oakford Park Mine (ca.   ?   ), located 1 mile east of Pennnsylvania Railroad station at Jeannette, Oakford Park, Westmoreland Co., PA
[Samdell (Sandell) Country Bank Mine became Oakford Park Mine.]
Owners: (before ca.1923), L. Sandell
              (ca.1923-    ?   ), Ruffner Brothers
See also: Sandell Country Bank Mine, Westmoreland Co., PA

Oakdale Coal Company
See: Bertha Mine, Sewickley Twp., Westmoreland Co., PA

Oakdale School, Unity Twp., Westmoreland Co., PA
See:

Oaklawn Mine (ca.1800's-  ?  ), located along PA Rt. 981, between Brandenville and Peanut, just north of the old high overhead Pennsylvania Railroad bridge, north of Brandenville, behind the present Derry Twp. Municipal Building, Derry Twp., Westmoreland Co., PA.
Owners: ?

Oakridge Mine
(Oak Ridge Mine) (ca.1917-1926), located at Upper Whyel, near Yukon, Sewickley Twp., Westmoreland Co., PA
[Oakridge Mine was also called Oak Ridge Mine]
[Oakridge Mine was listed as a new mine ca.1917.]
Owners: (ca.1917-  ?  ), Whyel Coke Company, Uniontown, PA
              (ca.1919-  ?  ), Whyel Coke Company, Uniontown, PA
Web sites on the Oak Ridge Mine, Upper Whyel, Yukon, Sewickley Twp., Westmoreland Co., PA:
    Coal Miners Memorial Oak Ridge Mine, Upper Whyel, Yukon, Sewickley Twp., Westmoreland Co., PA

Oakville, Derry Twp., Westmoreland Co., PA
[A railroad station and turning Wye on the Ligonier Valley Railroad, east of Latrobe, PA.]
See: Anna Mine, Oakville, Derry Twp., Westmoreland Co., PA
        Loyalhanna No. 2 Mine, Oakville, Derry Twp., Westmoreland Co., PA

Oakville, North Huntingdon Twp., Westmoreland Co., PA
[A Coal Company Patch town in North Huntingdon Twp., Westmoreland Co., Pennsylvania.]
See:

Oakville Coal & Coke Company, Latrobe, PA
See: Anna Mine, Oakville, Derry Twp., Westmoreland Co., PA

Ocean Coal Company, Betz Bldg., Philadelphia, PA
[a subsidiary of Berwind-White Coal Mining Company, Philadelphia, PA / Windber, PA]
See: Ocean No. 1 Mine (Herminie No. 1 Mine), Sewickley Twp., Westmoreland Co., PA 
        Ocean No. 2 Mine (Herminie No. 2 Mine), Hempfield Twp., Westmoreland Co., PA

Ocean Mine
(Ocean No. 1 Mine PCC)
(Scott's Mine No. 1) (ca.1875-  ?  ), located on the Pittsburg & Connellsville Railroad, later it became the B. & O. Railroad, at Scott Haven (Moore's Station), Sewickley Twp., Westmoreland Co., PA
[Mine was first called Ocean Mine, when Thomas Moore operated the mine, then changed to Scott's Mine No. 1, name was changed to Ocean No. 1 Mine when the Pittsburgh Coal Company purchased the mine, ca.1898.]
Owners: (ca.1875-  ?  ), Thomas Moore Company, Scott Haven, PA
(See: Ocean No. 1 Mine PCC, Scott Haven, Sewickley Twp., Westmoreland Co., PA)

Ocean No. 1 Mine
(Herminie No. 1 Mine) (ca.1893-1938), located on the Pennsylvania Railroad, at Herminie, Sewickley Twp., Westmoreland Co., PA
Owners: (ca.1893-1938), Ocean Coal Company, Herminie, PA, a Subsidiary of Berwind-White Coal Mining                         Company, Windber, PA / Philadelphia, PA
Web sites for Ocean No. 1 Mine (Herminie No. 1 Mine), Herminie, Sewickley Twp., Westmoreland Co., PA:
    History of the Ocean No. 1 Mine (Herminie No. 1 Mine), Herminie, Sewickley Twp., Westmoreland Co., PA
    Coal Miners Memorial, Ocean No. 1 Mine, Herminie No. 1 Mine) Herminie, Sewickley Twp., Westmoreland Co., PA

Ocean No. 1 Mine PCC
(Scott's Mine No. 1)
(Ocean Mine) (ca.1875- ?  ), located on the Pittsburg & Connellsville Railroad, later it became the B. & O. Railroad, at Scott Haven (Moore's Station), Sewickley Twp., Westmoreland Co., PA
[Mine was first called Ocean Mine, when Thomas Moore operated the mine, then changed to Scott's Mine No. 1, name was changed to Ocean No. 1 Mine when the Pittsburgh Coal Company purchased the mine, ca.1898.]
Owners: (ca.1875-  ?  ), Thomas Moore Company, Scott Haven, PA
              (1880's-1898), W. L. Scott Coal Company, Scott Haven, PA
              (ca.1898-  ?  ), Pittsburgh Coal Company, Pittsburgh, PA
                                      Company Store:  Federal Supply Company
              (ca.1901-  ?  ), Pittsburg Coal Company, Pittsburg, PA
              (ca.1903-  ?  ), Pittsburg Coal Company, Pittsburg, PA  
              (ca.1905-  ?  ), Pittsburgh Coal Company, Pittsburgh, PA
              (ca.1923-  ?  ), Pittsburgh Coal Company, Pittsburgh, PA
Web sites on the Ocean No. 1 Mine PCC (Scott's Mine No. 1), Scott Haven, Sewickley Twp., Westmoreland Co., PA:
    Coal Miners Memorial Ocean No. 1 Mine PCC (Scott's Mine No.1), Scott Haven, Sewickley Twp., Westmoreland Co, PA

Ocean No. 2 Mine
(Herminie No. 2 Mine)  (ca.1894-1938), located on the Pennsylvania Railroad, 1 mi. south of Edna No. 2 Mine, at Herminie No. 2, Hempfield Twp., Westmoreland Co., PA
Owners: (ca.1894-1938), Ocean Coal Company, Philadelphia, PA, a  Subsidiary of Berwind-White Coal Mining                  Company, Windber, PA / Philadelphia, PA
Web sites on Ocean No. 2 Mine, Herminie No. 2, Hempfield Twp., Westmoreland Co., PA:
    History of the Ocean No. 2 Mine (Herminie No. 2 Mine), Herminie No. 2, Hempfield Twp., Westmoreland Co., PA
    Coal Miners Memorial Ocean No. 2 Mine (Herminie No. 2 Mine), Herminie No. 2, Hempfield Twp., Westmoreland Co., PA

Ohio & Pennsylvania Coal Company
See: Euclid Mine & Coke Works (Youghiogheny Shaft Mine & Coke Works), South Huntingdon Twp., Westmoreland Co., PA
       Youghiogheny Shaft Mine & Coke Works (Euclid Mine & Coke Works), South Huntingdon Twp., Westmoreland Co., PA

Ohio City, Rostraver Twp., Westmoreland Co., PA
See:

Old Colony, Ligonier Twp., Westmoreland Co, PA
[A Coal Company Patch town in Ligonier Twp., Westmoreland Co., Pennsylvania.]
[Located on the Ligonier Valley Railroad, Mill Creek Branch, Old Colony branch.]
[ca.2001, The former town of  Old Colony is now a coal mining Ghost Town, located in a strip mined area of Ligonier Twp. Nothing remains of the town of Old Colony. The mine area is on the grounds of the Old Colony Sportsmans Club.]
See: Old Colony No. 1 Mine & Coke Works, Old Colony, Ligonier Twp., Westmoreland Co., PA
       Old Colony No. 2 Mine & Coke Works, Old Colony, Ligonier Twp., Westmoreland Co., PA       

Old Colony Coal & Coke Company,
See: Old Colony No. 1 Mine, Old Colony, Ligonier Twp., Westmoreland Co., PA
       Old Colony No. 1 Mine, Old Colony, Ligonier Twp., Westmoreland Co., PA

Old Colony No. 1 Mine & Coke Works (ca.   ?    ), located on the Old Colony Spur line off the Mill Creek Branch of the Ligonier Valley Railroad, at Old Colony, the town was located southwest of Wilpin, Old Colony, Ligonier Twp., Westmoreland Co., PA
[Old Colony Coke Works contained 128 bee-hive coke ovens ca.1917.]
[ca.2001, The former town of  Old Colony is now a coal mining Ghost Town, located in a strip mined area of Ligonier Twp. Nothing remains of the town of Old Colony. The mine area is on the grounds of a sportmans club.]
Owners: (ca.1910- ? ), Old Colony Coal & Coke Company,
              (ca.1910- ? ), Columbia Coal & Coke Company, Pittsburgh, PA
              (ca.1919- ? ), Greensburg Connellsville Coal & Coke Company, Pittsburgh, PA
Web sites for Old Colony Mines, Old Colony, Ligonier Twp., Westmoreland Co., PA:
    History of the Old Colony Mine & Coke Works, Old Colony, Ligonier Twp., Westmoreland Co., PA
    Miners Memorial, Old Colony No. 1 Mine & Old Colony No. 2 Mine, Old Colony, Ligonier Twp., Westmoreland Co., PA

Old Colony No. 2 Mine  (ca.    ?   ), located on the Old Colony Spur line off the Mill Creek Branch of the Ligonier Valley Railroad, at Old Colony, the town was located southwest of Wilpin, Old Colony, Ligonier Twp., Westmoreland Co., PA  
[ca.2001, The former town of Old Colony is now a coal mining Ghost Town, located in a strip mined area of Ligonier Twp.  Nothing remains of the town of Old Colony.  The mine area is on the grounds of a sportmans club.]
Owners: (ca.1910- ? ), Columbia Coal & Coke Company, Pittsburgh, PA
              (ca.1919- ? ), Greensburg Connellsville Coal & Coke Company, Pittsburgh, PA
Web sites for Old Colony Mines, Old Colony, Ligonier Twp., Westmoreland Co., PA:
    History of the Old Colony Mine & Coke Works, Old Colony, Ligonier Twp., Westmoreland Co., PA
    Miners Memorial, Old Colony No. 1 Mine & Old Colony No. 2 Mine, Old Colony, Ligonier Twp., Westmoreland Co., PA

Old Side Mine
(Denmark Mine), Claridge, Penn Twp., Westmoreland Co., PA
See: Denmark Mine, Claridge, Penn Twp., Westmoreland Co., PA

Old Side Mine
(Export No. 1 Mine), Export, Franklin Twp., Westmoreland Co., PA
See: Export No. 1 Mine, Export, Franklin Twp., Westmoreland Co., PA

Old Stanton, Hempfield Twp., Westmoreland Co., PA
See:

Old Staschak Place, Unity Twp., Westmoreland Co., PA
[A section of Humphreys, that was located on the north side of Firestone Road, just south of the town's two reservoirs, on the southern edge of the Old Town.  This section was alos called Jimtown.]
See: Humphreys, Unity Twp., Westmoreland Co., PA

Old Town Hunphreys, Unity Twp., Westmoreland Co., PA
[The northern third of the Village of Humphreys is refferred to as Old Town, because of its earlier origin.]
See: Humphreys, Unity Twp., Westmoreland Co., PA

Orchard Hill Mine (ca.1919-1923  ? ), located 1 mile west-northwest of Carbon, Hempfield Twp., Westmoreland Co., PA
[Mined the Pittsburgh coal seam.]
Owners: (ca.1919- 1923 ? ), George B. Taylor Coal Company, Greensburg, PA

Orezeck's Country Bank Mine (ca.1923- ? ), located  1 3/4 miles south of Grapeville, Hempfield Twp., Westmoreland Co., PA,  on the Carl Orezeck Farm.
Owners: (ca.1923- ? ), Carl Orezeck

Osborne, Saeger & Company, West Newton, PA
See: Darr Mine, Van Meter, Westmoreland Co., PA
        West Newton Shaft Mine, Westmoreland Co., PA 

Osborne Mine (ca.1903-  ?  ), located near the Main Line of the Pennsylvania Railroad, in the Irwin District, near Irwin, Westmoreland Co., PA
[Osborn Mine was listed as abandoned Sept. 30, 1904.]
Owners: (ca.1903-  ?  ), Westmoreland Coal Company, Irwin, PA

Osborne No. 1 Mine
(Wyano Mine No. 1)  (ca.1902-1944), located off PA Rt SR 3061, Wyano, South Huntingdon Twp., Westmoreland Co., PA
[Osborne Mines were also called the Wyano Mines.]
Owners: (ca.1902-1944), Youghiogheny and Ohio Coal Company, Cleveland, Ohio
Web sites on the Osborne Mines, Wyano, South Huntingdon Twp., Westmoreland Co., PA:
    History of the Osborne No. 1 Mine (Wyano Mine No. 1), Wyano, South Huntingdon Twp., Westmoreland Co., PA
    Coal Miners Memorial, Osborne No. 1 & No. 2 Mines, Wyano, South Huntingdon Twp., Westmoreland Co., PA

Osborne No. 2 Mine
(Wyano Mine No. 2) (ca.1910-1944), located off Rt. SR 3061, Wyano, South Huntingdon Twp., Westmoreland Co., PA
[Osborne Mines were also called the Wyano Mines.]
Owners: (ca.1910-1944), Youghiogheny and Ohio Coal Company, Cleveland, Ohio
Web sites on the Osborne Mines, Wyano, South Huntingdon Twp., Westmoreland Co., PA:
    History of the Osborne No. 2 Mine (Wyano No. 2 Mine), Wyano, South Huntingdon Twp., Westmoreland Co., PA
    Coal Miners Memorial, Osborne No. 1 & No. 2 Mines, Wyano, South Huntingdon Twp., Westmoreland Co., PA

Osburn, Derry Twp., Westmoreland Co., PA
[A railroad station on the Ligonier Valley Railroad, east of Latrobe, PA.]
See: Elizabeth Mine & Coke Works, Elizabeth, Osburn Station, Derry Twp., Westmoreland Co., PA

Osburn Station, Derry Twp., Westmoreland Co., PA
[A railroad station on the Ligonier Valley Railroad, east of Latrobe, PA.]
See: Elizabeth Mine & Coke Works, Elizabeth, Osburn Station, Derry Twp., Westmoreland Co., PA
       Smith Mine, Cooperstown, Osburn Station, Derry Twp., Westmoreland Co., PA
       S. H. Smith Mine, Osburn Station, Derry Twp., Westmoreland Co., PA

Osceola Coal Works
(Osceola Mine) (ca.1870's-1908), located on the Pittsburg & Connellsvile Railroad, later it became the B. & O. Railroad, on the Youghiogheny River, Osceola Station, Emblem, Westmoreland Co., PA
Owners: (ca.1870's-   ?  ), C. H. Armstrong & Son Company,
              (ca.1870's-1874), Philadelphia Coal Company, Philadelphia, PA
              (ca.1874- 1908), Westmoreland Coal Company, Irwin, PA
              (ca.1903-    ?   ), Osceola Coal Company, Pittsburg, PA
Web sites on the Osceola Coal Works Mine, Osceola Station, Emblem, Westmoreland Co., PA:
    Coal Miners Memorial Osceola Coal Works Mine, Osceola Station, Emblem, Westmoreland Co., PA

Osceola Mine (ca.1870's-  ?  ), located in Westmoreland Co., PA
See: Osceola Coal Works, Emblem, Westmoreland Co., PA

Osceola Station, Emblem, Westmoreland Co., PA
See: Osceola Coal Works, Osceola Station, Emblem, Westmoreland Co., PA

Overly School, Mt. Pleasant Twp., Westmoreland Co., PA
See:

Overholt & Company, West Overton, PA
See: West Overton Mine, West Overton, Westmoreland Co., PA
See also: A. C. Overholt & Company, West Overton, PA

Overholt & Company, West Overton, PA.
See: West Overton Mines & Coke Works, East Huntingdon Twp., Westmoreland Co., PA
See also: A. R. S. Overholt & Company, West Overton, PA

Overholt No. 1 Mine (ca.1917-  ?  ), located on the Pennsylvania Railroad, West Overton, Westmoreland Co., PA
Owners: (ca.1917-  ?  ), A. C. Overton & Company, West Overton, PA

Overholt No. 2 Mine (ca.1917-  ?  ), located on the Pennsylvania Railroad, West Overton, Westmoreland Co., PA
[Overholt No. 2 Mine was listed as a new mine ca.1917.]
Owners: (ca.1917-  ?  ), A. C. Overton & Company, West Overton, PA

Overton, A. C. & Company, West Overton, PA
See: Overholt No. 1 Mine, West Overton, Westmoreland Co., PA
        Overholt No. 2 Mine, West Overton, Westmoreland Co., PA 
        West Overton Mine & Coke Works, West Overton, Westmoreland Co., PA

Overton Coal Company, Connellsville, PA
See: Overton Mine, Overton Station, East Huntingdon Twp., Westmoreland Co., PA

Overton Coke Works Mine (ca.1877- ? ), located near West Overton, Overon Station, East Huntingdon Twp., Westmoreland Co., PA
Owners: (ca.1877- ? ), A. C. Overton & Company, West Overton, PA

Owens Mine & Coke Works (ca. ?  - ? ), location uncertain, on the Southwest branch of the Pennsylvania Railroad, Unity Twp., Westmoreland Co., PA
Owners: (ca.1910- ? ), King Coke Company

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