Browse Items (13 total) Tags: water supply Browse All Browse by Tag Search Items Browse Map Sort by: Title Creator Date Added / 2 pages Group outside of East portal of Olympus Tunnel 1950 1950 Drilling in Roberts Tunnel 1957 1957-02-20 Clyde Johnson outside Roberts Tunnel 1962 1962-11 Batch plant Unknown Water exiting Roberts Tunnel 1960 1960-01-11 Roberts Tunnel 1959-07-30 Laying track in Roberts Tunnel 1957 1957-12-05 Roberts Tunnel surge chamber 1960 1960 Roberts Tunnel surge chamber 1960 1960 Montgomery Reservoir, Park County, Colorado, October 13, 2019 Carlson, Sam 2019-10-13 Sort by: Title Creator Date Added / 2 pages Output Formats atom, dc-rdf, dcmes-xml, json, omeka-xml, rss2