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'Probably no phase of coal preparation requires the supervision and care that must be given to shooting practices. The type of explosive used is a safety powder known as "Duobel" and has been selected because it is most suitable for the coal mined in the White Oak Mines. Not only must the explosive be of the best quality and best suited for the work of breaking down the coal, but its use must be supervised and restricted. The proper amount to use; the size of the cartridge; the manner of tamping and many other details are looked after so that a maximum of lump and coarse coal is produced after shooting. This view shows the working place after the 'breaker shot' has been fired.'

2641. Breaker Shot

IDNO:
002643
Title:
Breaker Shot
Description:
'Probably no phase of coal preparation requires the supervision and care that must be given to shooting practices. The type of explosive used is a safety powder known as "Duobel" and has been selected because it is most suitable for the coal mined in the White Oak Mines. Not only must the explosive be of the best quality and best suited for the work of breaking down the coal, but its use must be supervised and restricted. The proper amount to use; the size of the cartridge; the manner of tamping and many other details are looked after so that a maximum of lump and coarse coal is produced after shooting. This view shows the working place after the 'breaker shot' has been fired.'
Print possibly overexposed.

2642. Area worked by Coal Cutters

IDNO:
002644
Title:
Area worked by Coal Cutters
Description:
Print possibly overexposed.
Looking down a mine shaft.

2643. Interior of New England Coal Mine

IDNO:
002645
Title:
Interior of New England Coal Mine
Description:
Looking down a mine shaft.

2644. Area Worked by Coal Cutters

IDNO:
002646
Title:
Area Worked by Coal Cutters
Miner works on pile of shot down coal.

2645. Shot Down Coal at Jamison Coal Mine No. 9

IDNO:
002647
Title:
Shot Down Coal at Jamison Coal Mine No. 9
Description:
Miner works on pile of shot down coal.
J.P. McGee, Acting Research Director, and Jack Smith, in Charge of the Gas Turbine Development Project discuss proper positioning of the turbine rotor in its casing.

2646. Proper Positioning of the Turbine Rotor in Its Casing

IDNO:
002648
Title:
Proper Positioning of the Turbine Rotor in Its Casing
Date:
1960-1970
Description:
J.P. McGee, Acting Research Director, and Jack Smith, in Charge of the Gas Turbine Development Project discuss proper positioning of the turbine rotor in its casing.

2647. Miner Testing for Gas

IDNO:
002649
Title:
Miner Testing for Gas

2648. Miner Roof Bolting

IDNO:
002650
Title:
Miner Roof Bolting

2649. Miner Placing a Charge

IDNO:
002651
Title:
Miner Placing a Charge

2650. Coal on Belt at Jamison Coal Mine No. 9

IDNO:
002652
Title:
Coal on Belt at Jamison Coal Mine No. 9
'This miner has just completed loading a mine car of weighing net about two and one-half tons, and is waiting for a locomotive to come along and take it out and give him another empty car. An industrious miner will load about six and sometimes eight of these cars in one day. This is a wooden mine car that is now being rapidly replaced by steel mine car equipment. The number of post shown in this picture indicate again the immense amount of timber required to conduct operations in a safe manner.'

2651. Loaded Mine Car

IDNO:
002653
Title:
Loaded Mine Car
Description:
'This miner has just completed loading a mine car of weighing net about two and one-half tons, and is waiting for a locomotive to come along and take it out and give him another empty car. An industrious miner will load about six and sometimes eight of these cars in one day. This is a wooden mine car that is now being rapidly replaced by steel mine car equipment. The number of post shown in this picture indicate again the immense amount of timber required to conduct operations in a safe manner.'

2652. Miner Testing for Gas at Consol. No. 32 Mine

IDNO:
002654
Title:
Miner Testing for Gas at Consol. No. 32 Mine
Date:
1957