Fear of Depths

I feel for the last guy say at the bottom of that Chilean mine. His mind must have been spinning, what with his dependence on block and tackle on the equivalent of a trip to the moon. No wonder they are celebrating. I watched the miners surfacing, and noticed the conspicuous boot of one of the rig men supporting some guiding wheel or another right on the steel edge of the hole rim. Crikey! You wouldn't get me within 20ft of a hole like that for fear of dropping in! As for the half hour ride up, I can hardly think about it. Fear of heights clearly equals fear of depths.