How sophisticated was the drilling equipment? Got any pictures? The rigs they used for the high rise down the street were huge and it seemed to take forever. I had thought they were drilling horizontally. It never occurred to me the loops would be vertical. How deep below the surface are the loops?

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13