Box 0140.01
Contains 11 Results:
(Ten Mine Sketches by R. Wheeler)
This Collection consists of five folders filed in one archival box. The folders contain reports, correspondence and maps by Robert M. Wheeler as well as many other Bethlehem Steel employees and photographs. Most of the material refers to the Bethlehem Cornwall Corporation holdings – the Cornwall Iron Mine and the Grace Mine, however there is included a report from the Bethlehem Mines Corporation regarding their Ellsworth-Butler Division.
Isometric View of Undercutting, Sketch No. SK 352
This Collection consists of five folders filed in one archival box. The folders contain reports, correspondence and maps by Robert M. Wheeler as well as many other Bethlehem Steel employees and photographs. Most of the material refers to the Bethlehem Cornwall Corporation holdings – the Cornwall Iron Mine and the Grace Mine, however there is included a report from the Bethlehem Mines Corporation regarding their Ellsworth-Butler Division.
Idealized Section of No. 4 Mine Parallel to the Inclined Shafts
This Collection consists of five folders filed in one archival box. The folders contain reports, correspondence and maps by Robert M. Wheeler as well as many other Bethlehem Steel employees and photographs. Most of the material refers to the Bethlehem Cornwall Corporation holdings – the Cornwall Iron Mine and the Grace Mine, however there is included a report from the Bethlehem Mines Corporation regarding their Ellsworth-Butler Division.
Section thru Partially Developed Fingers in the Old System
This Collection consists of five folders filed in one archival box. The folders contain reports, correspondence and maps by Robert M. Wheeler as well as many other Bethlehem Steel employees and photographs. Most of the material refers to the Bethlehem Cornwall Corporation holdings – the Cornwall Iron Mine and the Grace Mine, however there is included a report from the Bethlehem Mines Corporation regarding their Ellsworth-Butler Division.
Old Undercutting System
This Collection consists of five folders filed in one archival box. The folders contain reports, correspondence and maps by Robert M. Wheeler as well as many other Bethlehem Steel employees and photographs. Most of the material refers to the Bethlehem Cornwall Corporation holdings – the Cornwall Iron Mine and the Grace Mine, however there is included a report from the Bethlehem Mines Corporation regarding their Ellsworth-Butler Division.
Section thru Fingers Being Developed with the New System
This Collection consists of five folders filed in one archival box. The folders contain reports, correspondence and maps by Robert M. Wheeler as well as many other Bethlehem Steel employees and photographs. Most of the material refers to the Bethlehem Cornwall Corporation holdings – the Cornwall Iron Mine and the Grace Mine, however there is included a report from the Bethlehem Mines Corporation regarding their Ellsworth-Butler Division.
Longitudinal Section thru Slushing Drift, Showing the New System in its Initial Development Stage
This Collection consists of five folders filed in one archival box. The folders contain reports, correspondence and maps by Robert M. Wheeler as well as many other Bethlehem Steel employees and photographs. Most of the material refers to the Bethlehem Cornwall Corporation holdings – the Cornwall Iron Mine and the Grace Mine, however there is included a report from the Bethlehem Mines Corporation regarding their Ellsworth-Butler Division.
Longitudinal Section thru Slushing Drift, Showing the Undercutting Drift Breaking into the Second Finger Raise
This Collection consists of five folders filed in one archival box. The folders contain reports, correspondence and maps by Robert M. Wheeler as well as many other Bethlehem Steel employees and photographs. Most of the material refers to the Bethlehem Cornwall Corporation holdings – the Cornwall Iron Mine and the Grace Mine, however there is included a report from the Bethlehem Mines Corporation regarding their Ellsworth-Butler Division.
Section thru Finger Raises Showing Breaking Point Raises
This Collection consists of five folders filed in one archival box. The folders contain reports, correspondence and maps by Robert M. Wheeler as well as many other Bethlehem Steel employees and photographs. Most of the material refers to the Bethlehem Cornwall Corporation holdings – the Cornwall Iron Mine and the Grace Mine, however there is included a report from the Bethlehem Mines Corporation regarding their Ellsworth-Butler Division.
Longitudinal Section thru Slushing Drift Showing Progress of The Undercutting Phase
This Collection consists of five folders filed in one archival box. The folders contain reports, correspondence and maps by Robert M. Wheeler as well as many other Bethlehem Steel employees and photographs. Most of the material refers to the Bethlehem Cornwall Corporation holdings – the Cornwall Iron Mine and the Grace Mine, however there is included a report from the Bethlehem Mines Corporation regarding their Ellsworth-Butler Division.