Paper is such a natural part of our daily lives that we can sometimes forget just how much we rely upon this essential, renewable and evolving resource. Few things in life are as versatile, reliable and practical as paper. Be it a carrier, barrier or filter; be it opaque, translucent or transparent paper supports all manner of activities.Paper recycling is the process of turning waste paper into new paper products. There are three categories of paper that can be used as feedstocks for making recycled paper: mill broke, pre-consumer waste, and post-consumer waste. Mill broke is paper trimmings and other paper scrap from the manufacture of paper, and is recycled internally in a paper mill. Pre-consumer waste is material which left the paper mill but was discarded before it was ready for consumer use. Post-consumer waste is material discarded after consumer use, such as old corrugated containers (OCC), old magazines, old newspapers (ONP), office paper, old telephone directories, and residential mixed paper (RMP).