I read many years ago that they used brass wrenches working in grain elevators. ?
We had aluminum crescent wrenches. I thought it was because they were lighter and easier to use at the time.
Same with oil refineries...but over the years they learned through multiple testing through advanced technologies that a tool spark is too cold to cause a flash....always kinda made me uneasy....but that's the claim...
Grain elivaters are handled much differentlynow, they are blown down with compressed air to eliminate the dust...but I fear that could create a bigger problem...moving air creates static electricity...I have witnessed several refineries fires caused by a poorly grounded vac truck...
