The 30-inch core samples behind you were removed from the concrete foundation of the dam to allow access for future grouting and for a means to measure uplift pressure on the dam.
The sandstone samples on the west end are typical of . . . — — Map (db m177432) HM
George Martinez served the US Army Corps of Engineers from June 1960 through August 1991. He retired as the Maintenance Foreman at Conchas. His strong work ethics helped improve dam operations, maintenance, and the integrity of the facilities and . . . — — Map (db m177431) HM WM