Those workers are now self-isolating and will be tested before returning to work.

By: KDKA-TV News Staff

MONACA, Pa. (KDKA) — The Shell Cracker Plant in Beaver County reports there are 39 cases of coronavirus.

Shell says it believes most of those infected contracted the virus off-site. Those workers are now self-isolating and will be tested before returning to work.

Shell says all workers get daily temperature checks and those who do not pass are tested at an off-site lab.