Welcome Spokane Valley
Copenhaver Construction Inc. is a family owned and operated company. Established in 1992 we have continued to adapt and expand to meet the needs of our customers. From rock crushing to ready mix concrete, site prep to road construction, if you need some earth moved, hauled away or filled in, we are the one stop supplier you’re looking for. Please take a look at our products and services menu for information about what we have to offer. If you haven’t found what you need here, please feel free to call us at our office. Our helpful and knowledgeable staff is ready to assist you in any way we can. We look forward to speaking with you soon.
What is Rock Crushing.
A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust.
Crushers may be used to reduce the size, or change the form, of waste materials so they can be more easily disposed of or recycled, or to reduce the size of a solid mix of raw materials (as in rock ore), so that pieces of different composition can be differentiated.
Crushing is the process of transferring a force amplified by mechanical advantage through a material made of molecules that bond together more strongly, and resist deformation more, than those in the material being crushed do.
Crushing devices hold material between two parallel or tangent solid surfaces, and apply sufficient force to bring the surfaces together to generate enough energy within the material being crushed so that its molecules separate from (fracturing), or change alignment in relation to (deformation), each other. The earliest crushers were hand-held stones, where the weight of the stone provided a boost to muscle power, used against a stone anvil. Querns and mortars are types of these crushing devices.