If I was you, I'd coin-hunt around Ft. Lewis! If it's anything like our CA military basis of the same time period (up to and during WWII-date-range), they can be good for silver. Find out where the old bivwac training areas are, old PT fields, and around the old barracks. Another place I've done good at the old barracks, is under the porches of the ones that had the wooden "veranda" style or ramp type elevated wooden porches. Anytime they have the open siding, it's worth it to poke your coil under there. Even if it means raking or shoveling out the loose material & dirt, and scanning the tailings. The reason is, is that the soldiers in the old days would sit on those porches when they stepped outside for a smoke, to play cards, etc.... The porches often had wide-slats with open cracks, and coins would go through. It's hit and miss though, depending on if someone back in the old days had reason to clean under the enclosed elevated wooden porches. But if it's undisturbed, some of the turn out to be good. I've pulled up to 100 coins from under a single porch before at WWII era barracks. Naturally the majority would be Vietnam and current era, but there was always a mix of some buffalos, mercs, etc... 8)