Some Innovations in Equipment For Scaling High Roofs and Mine Walls (open access)

Some Innovations in Equipment For Scaling High Roofs and Mine Walls

Report issued by the U.S. Bureau of Mines describing the methods and equipment developed at the oil-shale mine near Rifle, Colorado. This report includes photographs and illustrations documenting this equipment.
Date: October 1950
Creator: Brown, Brinton C.; Wright, Fred D. & Ballinger, Homer J.
System: The UNT Digital Library
Pitchblende Deposits at the Wood and Calhoun Mines, Central City Mining District, Gilpin County, Colorado (open access)

Pitchblende Deposits at the Wood and Calhoun Mines, Central City Mining District, Gilpin County, Colorado

From introduction: The purpose of this work was to determine the distribution and reserves of pitchblende in the veins. These particular mines were selected because the other mines that had produced pitchblende in the east were either inaccessible, or accessible under such adverse conditions as to make detailed mapping impracticable.
Date: October 1950
Creator: Moore, Frank B. & Butler, C. R.
System: The UNT Digital Library
Preliminary reserve statement 8, reserve block 2, Club Mesa, Montrose County, Colorado (open access)

Preliminary reserve statement 8, reserve block 2, Club Mesa, Montrose County, Colorado

A preliminary statement regarding Reserve Block 2 of Club Mesa, located in Montrose County, Colorado.
Date: October 1950
Creator: Trace, Robert Denny
System: The UNT Digital Library
Preliminary reserve statement, reserve block A, Outlaw Mesa, Mesa County, Colorado (open access)

Preliminary reserve statement, reserve block A, Outlaw Mesa, Mesa County, Colorado

A preliminary reserve statement, regarding reserve block A of the Outlaw Mesa, Located in Mesa County, Colorado.
Date: October 1950
Creator: Trace, Robert Denny
System: The UNT Digital Library