When your recyclables arrive at the Materials Recovery Facility, they are dumped, or "tipped," onto the "tipping floor." A Materials Recovery Facility is also called a MRF, pronounced "merf." This MRF is a single-stream facility. That means that all the recyclables are mixed together – paper, glass, plastic, steel, aluminum, cardboard and paperboard. Dual-stream facilities tip paper in one place and the other materials in another. They are sorted on separate lines, requiring more space and manpower. >> Next >>