Those who live and work in the gulches.
1869. The unfortunate politician is corraled by the mountaineers, the gulchmen, or the settlers.A. K. McClure, Rocky Mountains, p. 210. [For a fuller quotation see CORRAL, v.]
1860. As a rule, the most successful gulch-miners are most improvident.Id., p. 240.
1883. Gulch mining, the earliest form of gold-digging, consists in washing the sandy detritus of river valleys, and collecting the free gold which subsides by virtue of its specific gravity.D. Pidgeon, An Engineers Holiday, p. 132 (Lond.).