DARLINGTON COUNTY, South Carolina — Monday marked the last day of operation at the Canfor sawmill in Darlington. The mill announced its closure back in June, and Monday marked the last day of work for more than 120 Darlington employees. Over a decade ago, Canfor announced its $8 million investment in the Darlington facility for upgrades and increased production, expanding its workforce. Back in June, Canfor announced it no longer made sense to continue operations in Darlington because of weak market conditions and sustained financial losses. …Since the announcement of Canfor closure, Darlington county leaders have tried helping employees find their next opportunity. …Canfor also announced the Estill mill in Hampton county is also scheduled to close this month.