I suppose in some part, safety concerns will be reflected in the wearing of wedding bands and other jewelry.

My father (now 82) was a farmer, as were both my grandfathers. The only jewelry I've known any of them to wear was a watch. If you've ever worked on a farm, there's no jewelry (watches excepted) worn, and no loose clothing, either -- It's just too easily caught up in machinery, where the results may be fatal!

Steve