Abstract: The invention relates to a polymer transport and distribution system comprising a vessel, pipeline or network of pipes containing polymer mother solution, and one or more pumps for transporting polymer mother solution from a first location to one or more injection well sites at a second remote location, each injection well comprising a polymer mother solution input feed line, a water input feed line, and a second pump for controlling mother solution flow rate and pressure upstream from the water input feed line, for producing polymer daughter solution from polymer mother solution and water, and injecting the resulting polymer daughter solution into an oil or gas field well. Also provided are methods of distributing polymer to one or more injection well sites in an oil or gas field.

Abstract: Balls are provided for use in baseball or softball, including, for example, a solid sphere, an outer shell of a foamed material, covering the solid sphere, and a material covering the outer surface of the shell. Methods for making a ball and a ball core are also described.