Reports of the Inspectors of Coal Mines of the Anthracite Coal Regions of ...
Reports of the Inspectors of Coal Mines of the Anthracite Coal Regions of ...
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Wilkins, civil engi- neer, Pittsburgh, Pa., and W. T. Scudderwas assistant engineer in charge of the construction. Thomas Laird is the superintendent, Wil- liam Snedden, mining boss, and James Jeffries, fire boss.
The shaft is 223^' deep, measured from the surface landing to the top of the rails at the bottom of the shaft. The shaft is timbered throug^h- out with 8"xl0" oak timbers placed 4' 10" from centers. Each set of timbers rests on eight posts morticed into the ring timbers. The shaft is ...lined throughout behind the timbers with 2" oak plank. The guides are 6"x8", best yellow pine, bolted to the buntings. The shaft is di- vided into three compartments; two hoisting compartments each 7'xlO' 4", and one 8' ll'xlO' 4" for pump-way.
The foundation of head frame is built up from solid rock and consists of 10' of concrete 4' wide, and on this is 3' of rubble masonry in cement mortar. A coping of dressed sandstone 1' thick and 3' 8" wide covers top of foundation. The head frame is of the triangular pattern, and is made of surfaced pine timber resting on cast iron plates bolted securely to the foundation.
What to read after Reports of the Inspectors of Coal Mines of the Anthracite Coal Regions of ...?
You can find similar books in the "Read Also" column, or choose other free books by Pennsylvania. Inspectors of Mines to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Wilkins, civil engi- neer, Pittsburgh, Pa., and W. T. Scudderwas assistant engineer in charge of the construction. Thomas Laird is the superintendent, Wil- liam Snedden, mining boss, and James Jeffries, fire boss.
The shaft is 223^' deep, measured from the surface landing to the top of the rails at the bottom of the shaft. The shaft is timbered throug^h- out with 8"xl0" oak timbers placed 4' 10" from centers. Each set of timbers rests on eight posts morticed into the ring timbers. The shaft is ...lined throughout behind the timbers with 2" oak plank. The guides are 6"x8", best yellow pine, bolted to the buntings. The shaft is di- vided into three compartments; two hoisting compartments each 7'xlO' 4", and one 8' ll'xlO' 4" for pump-way.
The foundation of head frame is built up from solid rock and consists of 10' of concrete 4' wide, and on this is 3' of rubble masonry in cement mortar. A coping of dressed sandstone 1' thick and 3' 8" wide covers top of foundation. The head frame is of the triangular pattern, and is made of surfaced pine timber resting on cast iron plates bolted securely to the foundation.
What to read after Reports of the Inspectors of Coal Mines of the Anthracite Coal Regions of ...?
You can find similar books in the "Read Also" column, or choose other free books by Pennsylvania. Inspectors of Mines to read onlineMoreLess
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