This really was an interesting and unusual show, quite a change from so much of the routine programming of that era. I suppose that the success of "Sea Hunt" made the idea of a series based on somewhat unusual occupations look like a good idea for a series. I remember one episode where some men were trapped by a cave-in in a tunnel, which was filling with water. The men on the outside used a bulldozer to push a large pipe with a cap on the end, not screwed tight with a wrench so that the men on the inside could remove it with their hands, through the soft cave-in to the inside.They knew that they would have to add another length of pipe, so they put another cap on the end the bulldozer pushed so as not to mess up the threads. Shows you how careful and realistic they tried to be down to the last detail. Great series, too bad it only lasted one season. Hope the episodes have not been lost.
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