Central Upper Peninsula and NMU Archives:
2 - Central basin summer field camp
Central Upper Peninsula and NMU Archives:
Drilling Holes
Central Upper Peninsula and NMU Archives:
Loading point of conveyor belt
Central Upper Peninsula and NMU Archives:
Ohio Mine
Central Upper Peninsula and NMU Archives:
Ohio Mine - East Pit
Central Upper Peninsula and NMU Archives:
Ohio Mine - West Pit
Central Upper Peninsula and NMU Archives:
Shallow Hole Trailer Drill at Ishpeming Centennial Parade
Central Upper Peninsula and NMU Archives:
Plate 2 – Empire-Magnetic chert-Depth 585'
Central Upper Peninsula and NMU Archives:
Plate 1 – Empire -Microscopy No. 4. Depth 195'
Central Upper Peninsula and NMU Archives:
Plate 4 – Cascade-Depth 410'
Central Upper Peninsula and NMU Archives:
Plate 3 - Empire
Central Upper Peninsula and NMU Archives:
Perkins South Member
Central Upper Peninsula and NMU Archives:
Plate 5 - Tilden Area - D.D.H. No. 1, Section 25. Depth 208'
Central Upper Peninsula and NMU Archives:
Plate 11 - L.O. 3139 - British Columbia Manganese Vein
Central Upper Peninsula and NMU Archives:
Plate 10 - L.O. 3135 - Lake St. John
Central Upper Peninsula and NMU Archives:
Plate 9 - Alberta L.O. 3130 - Alberta Oolitic Limonite-Siderite Iron-Formation - Depth 470'-610'
Central Upper Peninsula and NMU Archives:
Plate 8 - Albanel Oolitic Magnetic Iron-Formation - Albanel L.O. 3120 - D.D.H. No. 20. Depth 50'
Central Upper Peninsula and NMU Archives:
Plate 7 - O.E. 1107 - Vermilion Range West Extension
Central Upper Peninsula and NMU Archives:
Plate 2 - Cascade - D.D.H. #36, Section 27, 47-26 - Depth 302 feet.
Central Upper Peninsula and NMU Archives:
Plate 1 - Cascade - D.D.H. #36, Section 27, 47-26 - Depth 265 feet.
Central Upper Peninsula and NMU Archives:
Plate 6 - O.E. 1107 N.E. Itasca Co., Minnesota, Specimen #451 - O.E. 1174.
Central Upper Peninsula and NMU Archives:
Plate 5 - Osier Exploration D.D.H. #1, Section 18, 43-21 - Depth 773 feet.
Central Upper Peninsula and NMU Archives:
A view of Humboldt Mine pit operation looking northwest.
Central Upper Peninsula and NMU Archives:
Sub-level conveyor belt drift development at Mather Mine
Central Upper Peninsula and NMU Archives:
Undercutting drift in a block caving development area, Mather Mine
Central Upper Peninsula and NMU Archives:
Ohio Mine West Pit (Norwood)
Central Upper Peninsula and NMU Archives:
Cleveland-Cliff employees in front of the Cliffs Shaft Mine
Central Upper Peninsula and NMU Archives:
Mining equipment from Mather Mine “A” Shaft
Central Upper Peninsula and NMU Archives:
New fork lift tractor for materials handling
Central Upper Peninsula and NMU Archives:
Swanzy Exploration
