2020-07-302022-02-212020-07-302022-02-21https://hdl.handle.net/11124/174562Caption reads: "Dr. Maurice W. Major checks a strain seismometer unit, Green Geophysical Observatory."A man wearing glasses and a collared shirt holds a screwdriver up to equipment supported by cement blocks at the Green Geophysical Observatory; a view down a tunnel is in the background.10 x 8 inchesblack-and-white photographsLaboratory equipmentPeople -- ScientistsViews -- InteriorColorado School of Mines -- BuildingsGeophysical observatories -- ColoradoStillImage