Elk Valley Enterprises - also dba Crystal Positioning Systems - specializes in the manufacture of crystallography wquipment and Tools related to sample handling, storage and transport at cryogenic temperatures and controlled humidity. Principals of the firm offer customization services to include specific modification requests, custom colors and engraving of Universal Pucks and ALS Pucks. Services also available include manufacture of custom parts and mechanical assemblies. All offered products have been reviewed and approved for use by beamline scientists at the Stanford Synchrotron Radiation Lightsource (SSRL) at SLAC, the Advanced Light Source (ALS) at LBNL as well as other beamlines worldwide.