Are the records for the Anaconda copper mine readily available somewhere? Does anyone do look-ups in those? If so, would that angel look for John M. RIEHM and tell me what they find? He's not in the 1920 Census in Montana (or anywhere else!) as far as I can tell and I'm getting very frustrated. Thanks! Joann searching for John M. RIEHM in Butte, MT., ca 1910-1940.