Chlorine levels around the BioLab factor that burned down over the weekend continue to be at elevated levels as crews work to clear the chemicals causing a massive plume in that area.

GRAND CANYON NATIONAL PARK, Ariz. – A chlorine gas leak at Grand Canyon National Park’s main water supply has forced park officials to close all inner canyon corridor trails. Officials said ...

A chlorine gas leak at Roaring Springs forced the closure of all inner canyon corridor trails at Grand Canyon National Park, officials posted Wednesday evening on X, formerly Twitter. Bright Angel ...

GRAND CANYON VILLAGE, Ariz. — All inner canyon trails at the Grand Canyon reopened after a chlorine gas leak at Roaring Springs, the national park said on Thursday afternoon. The chlorine gas ...