Wiktionary
materials recovery facility
n. A waste recycling plant. Often shortened to MRF
Wikipedia
Materials recovery facility
A materials recovery facility, materials reclamation facility, materials recycling facility or Multi re-use facility (MRF - pronounced "murf") is a specialized plant that receives, separates and prepares recyclable materials for marketing to end-user manufacturers. Generally, there are two different types: clean and dirty MRFs.