Too much stuff to remember really. Arrowheads, gas and electric lines and bottles in central Michigan. Arrowheads and lots of petrified wood plus other Indian artifacts in Wyoming. Rattlesnakes (live) in Texas and Wyoming. Skunks, gold, and the Cheyenne Mountain to Wyoming and Nebraska missile silo communication cable in northwest Denver area. Lots of old stuff including wooden pipelines, Tritium, and radioactive items in western Colorado. Gravesites in Kentucky and in Vietnam near Danang. Also in Vietnam, all kinds of old American and French munitions and explosives, old French bunkers, and the bodies of about ten thousand people the Vietcong and NVA murdered in Tet-1968 and semi-buried near Hue. Bad, bad job, very smelly! All kinds of old tires, junk cars, bones, scrap iron and such from the San Antonio riverbed on the south end of town. Lots of old stuff from slag heaps and overburden at the Kennecott copper mine near Salt Lake City. Small amounts of silver ore and copper from slag heaps at old mines near Hancock, Michigan. Amethyst from a mine north of Lake Superior, Ontario. All kinds of nuts and bolts from oilfield locations, including tools and production equipment. Then there was the busted and bent drillstem, bits, and ANFO in the coal mines in eastern Kentucky. Touchy that. At a new side wall mine (Kentucky), drilled into an old underground mine and found that the old mining equipment, cars, harnesses, and track were still in place as was the primitive electrical lights they used back in the 30’s and forties. All kinds of castoff or abandoned mining and excavation or maintenance stuff at the site of the old oilshale mine near Parachute, Colorado. There’s a lot more that I’ve forgotten.