Complex sentence: The Norton paper mill is located on Jeremy River (in Colchester, Connecticut), operating from 1895 until at least 1922, before being abandoned by the early 1980s, and falling into disrepair.
Split into simpler sentences: The Norton paper mill is located on Jeremy River (in Colchester, Connecticut). It operated from 1895 until at least 1922, before being abandoned by the early 1980s, and falling into disrepair.