Mine detail: Twisted Oak No.1

Previously called 'Helmke Manganese Group'

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Location

Lat / long:

40.12705, -123.51531

Resource(M)

Tertiary:	Manganese
Discovery year:	1942

Production

Operation type:	Surface
Development status:	Prospect

Geology

References

MRDS	M020365
MAS	61050076
DEP	10166144
Reference	PARKER D. TRASH AND FRANK S. SIMONS APRIL 8 1942
Reporter	Western Field Operations Center (WFOC)