Abstract: Composite metal articles of high density are made from iron and lead or a lead-rich alloy in proportions suitably of about 25 to about 90 wt. % iron, when present up to about 5 wt. % of a lead alloy-forming element aiding wetting of the iron, and the balance substantially all lead. Preferably copper, zinc, tin, indium or mixtures thereof are present to aid wetting the iron phase.Composite bird shot, for instance, is prepared e.g. by matrix formation and infiltration, or by agglomeration techniques, or by other techniques, with, if desired, a final mechanical shaping or compaction. The presence of iron has been found to cause a significant reduction in toxicity to birds on ingestion.

Abstract: A rotatable drum having an interior which tapers in a horizontal direction has a first port at the smaller end for receiving particulate Tar Sands or coal, and an agglomerating liquid, e.g. water, and a second port at the larger end for receiving an organic material separating liquid, e.g. Varsol, with which the agglomerating liquid is immiscible. The first port is, for example, larger than the second port so that the separating liquid will drain from the drum through the first port. A conveying means delivers the particulate material and agglomerating liquid into the drum interior, and the separating liquid forms a slurry therewith so that inorganic residue from the particulate material is formed into ball agglomerates as it tumbles along the drum and the ball agglomerates overflow through the second port while the separating liquid fed into the second port separates organic material from the particulate material (Tar Sands) in the drum and overflows therewith through the first port.

Abstract: A composition for forming pressure- and heat-sensitive coating comprising finely divided organic material of particle size from about 0.001 to 15 micro meters in diameter having a melting point above about 55.degree.C, the particles being of substantially uniform color and subject to plastic flow by heat or pressure, a liquid carrier in sufficient amount to give a fluid system and normally including a binder dispersed in the carrier. The composition optionally includes an oil-soluble dye or a pigment uniformally dispersed in said particles. A method for preparing the compositions which comprises heating to dissolve in a suitable solvent as the solid organic material, cooling the resulting solution to form a paste of the desired particles, normally incorporating a binder, and optionally incorporating coloring material into the organic material.