USAR makes charitable contributions to the American Humane Association Animal Coverage per square foot varies based upon application and preparation of material. Coverage per square foot varies based upon application and preparation of material. Rock is sold in one ton lots at our location in Aguila, Arizona or delivered via truck freight or rail service (where available.) There are no minimum orders and customer pays all shipping costs. Weight per ton is approximately 2000 pounds USAR makes charitable contributions to the American Humane Association Animal International Energy and Resources, Inc. was Founded January 3, 2001 to explore potential mining properties. IER began as a consultant for USCorp Hilbrands & Western's drilling, mining and machinery experts have 30 years of experience exploring Decorative rock ground cover is a one time landscape solution that lasts year after year. Mulch and tree bark fade and decompose over a short period of time and often need to be replaced International Energy and Resources, Inc. was Founded January 3, 2001 to explore potential mining properties. IER began as a consultant for USCorp