Abstract: A portable air purifier device for emergency use by an individual in an atmosphere that contains air which has been contaminated with one or more combustion products, said combustion products comprising at least in part a mixture of particulate matter, carbon monoxide and other toxic chemical entities, said device comprising an elongated hollow body having an atmosphere inlet end and an outlet end, said outlet end terminating in a mouthpiece so that said atmosphere can be inhaled by way of a human user's mouth sequentially through said inlet end, body and mouthpiece, said body comprising a plurality of zones for treating said contaminated air as it passes therethrough, one of said plurality of zones is a carbon monoxide removal and fixation zone being adapted to remove and fix said carbon monoxide and another one of said plurality of zones is a toxic chemical reaction and fixation zone adapted to chemically react with said other toxic chemical entities having a porous support material impregnated with reactio

Abstract: A method and apparatus for testing cold gases for a hazardous gas by flowing the cold gas through a tubing positioined in a garment and then flowing the heated gas from the tubing into a suitable test apparatus.

Abstract: An improved method for producing coal agglomerates from an aqueous feed slurry containing finely divided coal and finely divided inorganic solids, the method consisting essentially of mixing a quantity of oil equal to from about 25 to about 75 percent of the oil required to produce the coal agglomerates with the aqueous slurry; thereafter mixing a quantity of an aqueous solution of a suitable polymeric material in an amount sufficient to agglomerate the finely divided coal with the aqueous slurry; and recovering the coal agglomerates.

Abstract: An improved process for reducing the water content of coal containing bound water by releasing at least a portion of the bound water by maintaining the coal at a temperature from about 220.degree. to about 500.degree. F. in the presence of water at a pressure sufficient to maintain at least a portion of the water in a liquid phase for a time sufficient to release at least a portion of the bound water wherein the improvement comprises contacting the coal during such treatment with an acidic material selected from the group consisting of carboxylic organic acids containing up to about 6 carbon atoms, phenol, phenolic acids and inorganic acids.

Abstract: A method for encapsulating an arsenic-contaminated waste material, e.g. spent guard bed material, in a concrete formed by mixing the waste material with a tricalcium aluminate-free hydraulic cement, e.g. aluminous cement, and water. The resulting mixture is allowed to harden producing a concrete product which is highly sulfate and acid resistant. By being sulfate resistant, ettringite is not formed even after prolonged periods of exposure thereby insuring the structural integrity of the concrete product which allows it to be used as a permanent landfill material without risk of the arsenic being leached therefrom by contacting water. Aggregate, e.g. sand and/or silica flour may be added, and the mixture can be agitated and/or exposed to steam during curing to substantially increase the density of the final product. In instance of prolonged curing times, an accelerator chemical is added to the mixture to speed curing.