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'A small portion of the hot ash-laden gas stream entering the turbine is continuously removed by this ash-sampling unit. Data from the operation of this unit is analyzed to determine the concentration, size, and composition of the ash in the hot gases entering the turbine.'

1. Sampling Hot Ash-Laden Gas

IDNO:
002686
Title:
Sampling Hot Ash-Laden Gas
Date:
ca. 1960-1970
Description:
'A small portion of the hot ash-laden gas stream entering the turbine is continuously removed by this ash-sampling unit. Data from the operation of this unit is analyzed to determine the concentration, size, and composition of the ash in the hot gases entering the turbine.'
Coal crushed to 3/16-inch by 0 is pumped to a pulverizer that grinds it to 90-per cent hrough 200-mesh. The product is mixed with air and burned in the combustors. Hot high-speed gas from the ash separators drives the turbine, air compressor, and electric generators. Exhaust from the turbine passes through a regenerator that preheats compressed air to the combustors. If used, please credit Bureau of Mines, U.S. Department of the Interior.

2. Schematic Diagram of Coal-Fired Gas Turbine

IDNO:
002690
Title:
Schematic Diagram of Coal-Fired Gas Turbine
Date:
ca. 1960-1970
Description:
Coal crushed to 3/16-inch by 0 is pumped to a pulverizer that grinds it to 90-per cent hrough 200-mesh. The product is mixed with air and burned in the combustors. Hot high-speed gas from the ash separators drives the turbine, air compressor, and electric generators. Exhaust from the turbine passes through a regenerator that preheats compressed air to the combustors. If used, please credit Bureau of Mines, U.S. Department of the Interior.
This mock-up shows the new blade design being tested by the Bureau of Mines. The base of the blade is thicker and there is a strip of titanium carbide at the point of previous severe erosion. If used, please credit Bureau of Mines, U.S. Department of the Interior.During LDC's final 1,100-hour run, this rotor blade (arrow) was undercut by ash flowing along the rotor past the tips of the stator blades. If used, please credit Bureau of Mines, U.S. Department of the Interior.

3. New Rotor Blade Design

IDNO:
002692
Title:
New Rotor Blade Design
Date:
1960-1970
Description:
This mock-up shows the new blade design being tested by the Bureau of Mines. The base of the blade is thicker and there is a strip of titanium carbide at the point of previous severe erosion. If used, please credit Bureau of Mines, U.S. Department of the Interior.During LDC's final 1,100-hour run, this rotor blade (arrow) was undercut by ash flowing along the rotor past the tips of the stator blades. If used, please credit Bureau of Mines, U.S. Department of the Interior.
This mock-up shows the new blade design being tested by the Bureau of Mines. The base of the blade is thicker and there is a strip of titanium carbide at the point of previous severe erosion. If used, please credit Bureau of Mines, U.S. Department of the Interior.During LDC's final 1,100-hour run, this rotor blade (arrow) was undercut by ash flowing along the rotor past the tips of the stator blades. If used, please credit Bureau of Mines, U.S. Department of the Interior.

4. New Rotor Blade Design

IDNO:
002693
Title:
New Rotor Blade Design
Date:
1960-1970
Description:
This mock-up shows the new blade design being tested by the Bureau of Mines. The base of the blade is thicker and there is a strip of titanium carbide at the point of previous severe erosion. If used, please credit Bureau of Mines, U.S. Department of the Interior.During LDC's final 1,100-hour run, this rotor blade (arrow) was undercut by ash flowing along the rotor past the tips of the stator blades. If used, please credit Bureau of Mines, U.S. Department of the Interior.

5. Summerlee Hoisting Room, C. B. Lee, Engineer, at the Controller

IDNO:
002694
Title:
Summerlee Hoisting Room, C. B. Lee, Engineer, at the Controller
Date:
ca. 1900-1920

6. Cutting Coal by Machine

IDNO:
002695
Title:
Cutting Coal by Machine

7. Coal Cutting Machine

IDNO:
002696
Title:
Coal Cutting Machine
Miner operates a shuttle car that is loaded with coal.

8. Shuttle Car Being Loaded

IDNO:
002697
Title:
Shuttle Car Being Loaded
Description:
Miner operates a shuttle car that is loaded with coal.
Minre watches as coal pours into the shuttle car.

9. Shuttle Car Being Loaded

IDNO:
002699
Title:
Shuttle Car Being Loaded
Description:
Minre watches as coal pours into the shuttle car.
Mountaineer Coal Company, Division of Consolidation Coal Company.

10. Continuous Mining Machine (Middle) and Loading Machine (Bottom)

IDNO:
002701
Title:
Continuous Mining Machine (Middle) and Loading Machine (Bottom)
Date:
1959/04/07
Description:
Mountaineer Coal Company, Division of Consolidation Coal Company.

11. Shuttle Car Approaches Mine Railway Track.

IDNO:
002703
Title:
Shuttle Car Approaches Mine Railway Track.
1-Mining machine, electrically operated, 2. Electric locomotive and coal car train leaving mine, 3. Shaker screen for sorting coal according to size, 4. Coal powerhouse and tipple.

12. Coal Mining, Modern Methods of Production

IDNO:
002704
Title:
Coal Mining, Modern Methods of Production
Description:
1-Mining machine, electrically operated, 2. Electric locomotive and coal car train leaving mine, 3. Shaker screen for sorting coal according to size, 4. Coal powerhouse and tipple.