In article .com,
"Jay Honeck" wrote:

At my airport our taxiway is in sad shape, and it's due to be repaved
this summer. We pick up new prop chips on most flights, despite NEVER
taxiing above 1000 RPM, and being extremely careful about where we
taxi. This seems to show that props DO suck rocks into them,
somehow...

I was going to cheerfully bring that up when you broached the gravel
topic. :-))