Campbell County Landfill cell construction August 20, 2010 News by COMANCO COMANCO > COMANCO BLOG > News > Campbell County Landfill cell construction Campbell County Landfill in Gillette WY has a new cell being constructed using GSE’s Gundseal material — Bentonite adhered to a 60 mil HDPE textured geomembrane. The project is being managed by Jason Rivera and supervised by Felipe Garrido. Previous Post Next Post