According to our records, this business is located at P.O. BOX 411 in Yreka (in Siskiyou County), California 96097, the location GPS coordinates are: 41.7354186 (latitude), -122.6344708 (longitude). John Sykora is categorized under Overburden Removal, Nonmetallic Minerals (SIC code 1481). Known organization owner is John Sykora. Current estimates show that the unit has a sales volume of $160,000 and staff of approximately 1 worker. You can contact the company by phone at (530) 842-6722.