Abstract: A composition of matter enhances friction of a surface covered with snow or ice. The composition includes particles of limestone and particles of volcanic rock, the particles having a size in a range of about 0.125-1.0 inches, and more preferably 0.125-0.25 inches. Limestone is present in the composition in a percentage of about 53-67%, by weight, and volcanic rock is present in a percentage of about 33-47%, by weight. The components are thoroughly mixed to form a homogeneous mixture. When the composition is applied to a snow-covered or ice-covered surface, the coefficient of friction of the surface increases so much that the surface can be considered a “non-slip” surface.

Abstract: A composition for melting ice and snow includes granular particles, preferably made of urea, the particles being coated by a mixture of an antifreeze composition and a nitrate inhibitor. The antifreeze and nitrate inhibitor are provided in liquid form, and the liquid mixture is sprayed or otherwise coated onto the particles. The composition provides an improved ice-melting material while minimizing environmental damage due to leaching of nitrates into ground water reservoirs.