Abstract: A method of and apparatus for collecting samples from a flowing stream in which an elongated sampling device including inner and outer concentric, relatively rotatable tubular members is positioned in and extends across the stream. The tubular members each have a longitudinally extending slot at least as long as the transverse width of the stream, with the slots being wider, and preferably at least about three times wider than the dimension of the largest particles contained in the stream. To take a sample, the inner tubular member is rotated to position its slot facing upstream, then the outer tubular member is rotated to position its slot in alignment with the slot in the inner tubular member to permit material from the stream to flow into the inner tubular simultaneously across the full width of the stream. When samples are not being taken, at least the outer tubular member is rotated to so that its slot faces downstream.

Abstract: An improved pelletized fuel consisting essentially of from about 70% to about 98% coal fines and from about 2% to about 30% waste thermoplastic polymeric material (plastic) and a method of producing the improved pelletized fines are disclosed. The plastic is shredded or granulated before mixing with the coal fines, and the mixture is heated to a temperature to soften or melt at least a major portion of the plastic. The heated mixture is then shaped by applying a pressure of at least about 600 PSI and pressing the mixture through a pelletizing or extrusion die, or shaping the mixture in a briquetting operation.