Compost Covers of the Highest Quality: Produced by Monolithic and MOR Working together, Monolithic and MOR have researched and developed a high quality compost cover. These newly developed compost covers have NO leaks and perfect VOC (volatile organic compounds) capture. MOR is a leader in aerated static pile (ASP) composting technology using expanded Polytetrafluoroethylene (PTFE) micropore covers for process enhancement and emissions control, both odors and VOCs. MOR has tested its technology on a wide variety of organic feedstock materials. MOR can supply a complete compost facility design and equipment package and individual components on an as-needed basis.