Born-Digital or AnalogAnalogTranscriptRock drilling Forgotten sport which once was widespread in southwest hard rock drilling. Desert, v.24, #8, August 1961, p.14-17 Champions of Colorado honored. Post F 7, 1971 P-34 Competition thrives in Nevada towns. Westways v.70 #9 S 1978 p.47CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
