Whibco is a producer of quality landscaping gravel. Our deposit allows us to produce various sized gravels for many different applications in large quantities. Whibco gravel is first washed when it comes into our Primary Classifying Tank and screened out of the process. The gravel is then run through our stone plant where the material is washed again and screened. We produce a 3/8” landscape gravel, an AASHTO #7 Gravel, and an AASHTO #57 Gravel.