A few suggestions, from what I have seen at my platers shop to be shipped out, anybody who does any HP auto chassis bracketry, etc, likely yellow zincs something, anybody who rebuilds in mass automotive accessories, like starters, alternators, etc yellow zincs, anybody who builds/manufactures electrical cabinetry, fixtures, racks, likely plates something, any of the above should be able to share who they use, or have used in the past. Lot of aircraft stuff also gets plated, new and rebuilt, but requires a higher end plater I believe, and that's is still a big industry in St Louis, correct?

Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.