Abstract: Three stacked components are bolted together. The uppermost component supports a key-controlled actuator which vertically shifts three rods. One of the rods operates a switch. Each of the other two rods controls the flow of fluid in a brake line. Each brake line includes parallel passages in the intermediate and lower body components. The parallel passages are interconnectd by a bypass passage of smaller diameter than the parallel passages. The parallel passages are further interconnected by a one-way valve passage downstream of the bypass passage. Each one-way valve passage includes a spring biased ball which permits fluid flow to a brake cylinder but prevents reverse flow. Each of the other two rods is slidable into anti-theft position to block fluid flow through the associated bypass passage, but permitting fluid flow through the associated one-way valve to a brake cylinder.

Abstract: A storage arrangement for waste materials of the type which tend to pollute the environment consisting of a waterproof reinforced concrete vault, preferably located underground, and a permanent reinforced concrete storage vault within the underground vault and spaced from the walls thereof by a water lock. Sealed containers filled with chemical or nuclear waste are deposited in the permanent storage vault and sealed therein with bitumen. The underground vault is provided with an access opening to the water lock to enable testing of the water periodically for contamination due to leakage from the permanent storage vault. If no leakage is evident after a predetermined time period has elapsed, the permanent storage vault is removed from the underground vault and shipped to a permanent storage site.