Abstract: A water-based, recyclable metalworking fluid comprises a polyalkylene glycol, an alkanolamine, a polyglycol surfactant, a polyol surfactant, a biocide and a corrosion inhibitor. The biocide may comprise a mixture of biocidal compounds effective against bacterial and fungal organisms. The material may also include an isoalkoxy amine oxide and a glycol ether. The composition may also include ancillary ingredients such as viscosity controlling agents, defoamers, coloring agents and the like. It is a notable feature of the composition of the present invention that it is free of hazardous materials and fatty acids. Also disclosed is a method for using the composition in a metal-shaping operation.

Abstract: An apparatus and process for removing and recovering contaminants from a pipeline while containing and preventing the contaminants from spilling or leaking into the environment during said removal comprising. Specifically, the apparatus and method effectively and safely remove PCBs from a gas transmission pipeline. The apparatus and method implements a unique coupling system the prevents dangerous contaminants from escaping into the environment. Furthermore, the apparatus and method implements and system for recycling cleaning solution for continuous treatment of the pipeline.

Abstract: A floating waste oil skimming device comprising a pair of hulls between which is suspended a skimmer box containing a plurality of oleophilic discs. The skimmer box has an outwardly opening bottom door which promotes a draft of water through the skimmer box when the device is in forward motion. Alternately the device can be operated in a stationary mode wherein water is evacuated from the skimmer box by means of a stand pipe inside the box. The skimmer box and oleophilic disc array are demountable and the pair of hulls can be folded together for transportation.