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they go to work at it?

One of them finally did invent a most admirable method of prevention of silica exposure. I forget the man's name, but I gave him the prize. He was an engineer, but not an educated engineer - a practical engineer in charge of some of the construction work for the Turner Construction Company. He was in charge of their foundation work. He was a man not educated at M.I.T., but by the hard road of experience. He was an awfully inventive, decent man. He came in all glowing one day. He believed he had the idea. It seemed very good, but it had to be demonstrated. It was a method of applying suction - the same kind of suction which you would apply if you were grinding small tools on a carborundum wheel. You could build a hood over that and if it was a small operation, it took out all the dust. That was the end of silica at that place. But in a great foundation where they were using jack hammers and automatic drills, it couldn't be done. He got the idea of attaching to the point of operation - that is, to the point where the hammer actually hit the rock - a rubber suction cup, part of it attached to the jack hammer, with a long tube getting it back to some central collecting place. He had it all diagrammed out and saw exactly how it could be done. He'd made up a small model. He could