File:File-51963.BB001--Cost Estimate of coal pockets for the Bangor Slate Mining Company--Excelsior Junction--Pen Argly, PA -1904.11.14- (ca422056-0528-45fa-8b44-f55a2e0d9c59).jpg
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![File:File-51963.BB001--Cost Estimate of coal pockets for the Bangor Slate Mining Company--Excelsior Junction--Pen Argly, PA -1904.11.14- (ca422056-0528-45fa-8b44-f55a2e0d9c59).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/0/06/File-51963.BB001--Cost_Estimate_of_coal_pockets_for_the_Bangor_Slate_Mining_Company--Excelsior_Junction--Pen_Argly%2C_PA_-1904.11.14-_%28ca422056-0528-45fa-8b44-f55a2e0d9c59%29.jpg/360px-thumbnail.jpg?20190822085403)
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