We gratefully acknowledge many of the following slides taken by Wilson McClung.
Virginia Tech Drill and logging truck. Drilling of Piedmont granite by Bill Coulson using Tech's drill rig. Tech's Heat Flow logging truck is to the left backed up and running a preliminary temperature log down the drill pipe. The photo was taken shortly after Coulson's drill truck was painted all white (it previously had a blue bed, white cab, and yellow mast)
Virginia Tech logging truck.
Inside of Tech logging truck. . . showing SOL microprocessor, Fluke multimeter (bottom) for supplying current to the thermistor and measuring resistance across the thermistor, small black and white portable TV used as a monitor, and standard cassette recorder used for recording of data. Modem to right of TV screen used to transmit data to Tech from motel while drill was still on the site.
Virginia Tech logging truck. . . backed up to a pay telephone at OCCall City. MD, transmitting data via modem to Blacksburg, VA, the IBM 360 mainframe at Tech (Jan 1, 1979).
Transmitting data.Close-up of pay phone receiver inserted into a modem. and transmitting log data to Virginia Tech for analysis. Note the rotary dial, standard issue of the day! (Jan. 1979)
Drilling of Crisfield, MD, Deep Geothermal Test. Rig floor of DOE-contracted rig (used for mining emergencies) that drilled the deep Crisfield MD, DOT-I test well (May, 1, 1979)
Dresser Atlas wireline logging truck at Crisfield well. Dresser Atlas wireline logging truck backed up to run open hole Spectral Gamma Ray log in DOT-I well (June 5, 1979, Crisfield, MD). This truck came all the way from Hobbs, New Mexico, to do this job --barely got there in time due to the engine throwing a rod somewhere in the north panhandle of Texas - were delayed a few days as a new engine was installed.