000 00266pam a2200097a 44500
082 _aTR
_bIC-7525
100 _aD. W. Butner
245 1 _aMethod and cost of driving the rock creek funnel hecla mining co. shoshone county,Idaho
260 _a
_b
_c
997 _aTR5219 C
999 _c405394
_d405394