Abstract: A flowable material delivery trailer is equipped to deliver flowable material (e.g. water, inert gas or other fluid, or flowable solid), preferably at a high pressure and a low flow rate, particularly in hazardous situations, for example in firefighting and in washing difficult to access areas or things (e.g. high voltage transmission towers, transformers on high voltage power lines, insulators on high voltage power lines, signs, street lights and other elevated surfaces). The trailer may comprise a plurality of detachable nozzles, which may be operated independently and simultaneously. The trailer is operable by a single operator under a variety of environmental conditions, and is capable of effectively managing flows to conserve flowable material during operation.

Abstract: An apparatus for cutting involves a support configured to stably support the apparatus on a surface, an articulated boom rotatably mounted on the support proximate a first end of the boom, and a hydraulically operated end effector mounted on the boom proximate a second end of the boom. The end effector has a cutter configured to cut an object, and preferably also has an immobilizer (e.g. a gripper) configured to immobilize the object while being cut by the cutter. The end effector has a swivel between the cutter (and/or immobilizer) and the boom, the swivel rotatable continuously through 360° to rotate the cutter (and/or immobilizer) continuously through 360°. The swivel has an internal fluid conduit through which hydraulic fluid may be transported from a hydraulic fluid reservoir to the cutter to hydraulically operate the cutter.