Hammer hardened manganese steel bar, 1882-1884
1882-1884
Magnetic and non-magnetic manganese steel bar
1882-1884
Manganese steel ingot fracture
1882-1884
Manganese steel ingot fracture
1882-1884
Manganese steel ingot fracture
1882-1884
Manganese steel ingot fracture
1882-1884
Link, manganese steel, 1882-1884
1882-1884
Manganese steel ingot fracture
1882-1884
Manganese steel ingot fracture
1882-1884
Manganese steel ingot fracture
1882-1884
Forged bending strip
1882-1884
Cast bending strip
1882-1884
Manganese steel ingot fracture
1882-1884
Ploughshare, manganese steel, 1882-1884
1882-1884
One portion of a worn Crusher Jaw
Manganese steel ingot fracture
1882-1884
Tested tensile manganese steel bar
1882-1884