Mine detail: Broken Hammer Prospects

Previously called 'Helmke Manganese Group'

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Location

Lat / long:

40.12985, -123.48581

Resource(M)

Tertiary:	Manganese
Discovery year:	1942

Production

Operation type:	Unknown
Development status:	Prospect

Geology

References

MRDS	M020311
MAS	61050020
DEP	10141932
Reporter	Western Field Operations Center (WFOC)