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61. Miners Testing for Gas in a Coal MIne

Two miners test for gas in mine. Hamilton Wright Organization Inc.  80 Rockefeller Plaza, New York City, 'Newspaper Feature News' This photograph released to you GRATIS for editorial use only. Do not use for advertising purpose without written permission.

62. Testing for Gas

Man tests for gas at the Jamison No. 9 Mine.

63. Testing for Gas at Jamison No. 9 Mine

Miner in the process of placing charges into the coal seam at Bishop Mine.

64. Placing Charges, Bishop Mine

Miner operating a loading machine.

65. Loading Machine in Operation

Miner operating a Joy Loading Machine. '180 tons a day.'

66. Joy Loading Machine in Action

67. Miner Operating a Joy Continuous Mining Machine

Miner operating a Joy loading machine.

68. Modern Joy Loading Machine

Miner operating a Joy loading machine.

69. Joy Loading Machine

Miner operating a Joy continuous mining machine.

70. Joy Manufacturing Company Continuous Mining Machine

Two miners at Pursglove No. 15 cut coal preparatory to shooting it down for loading.

71. Cutting Coal at Pursglove No. 15

Two miners work on putting in roof bolts in the Pittsburgh Seam. Timber jack used to hold the roof while bolting.

72. Miners Roof Bolting