Minefields contain many other fragments of metal, including shrapnel, bullet casings, and metallic minerals. Waterglass was commonly used to cement the top overshot wad into these brass shell casings. A 9 mm with hollow-tip shell casings strewn beneath. The search turned up several spent .38 caliber shell casings. Furthermore, there were four shell casings found in his room. An investigator later testified that 146 spent shell casings were recovered inside the building. This evidence included 146 shell casings and six magazines. Any links or brass casings are removed. It contains ground veal, ground pork, and fresh garlic stuffed into hog casings. Polystyrene copolymers are used in the manufacture of toys and product casings. The casings are sometimes recycled from scrounged US or NATO military brass casings. Bundy left various clues behind, including shell casings in the van. Bullet casings came from a military drone. The plant primarily made shell casings for World War I. Hard drives are usually shielded by heavy metal casings.