Two employees at Sappi paper mill in Westbrook, Maine test positive for COVID-19 WESTBROOK, Maine (From news reports) -- Two employees at the Sappi Fine Paper Mill in Westbrook have tested positive for COVID-19, both of whom appear to have been infected due to exposure outside of the mill. Both employees and all employees who had been in close contact with them have been quarantined, consistent with CDC guidelines. Sappi is in the process of developing a protocol for employees to wear masks.