FOND DU LAC, Wis. – A dirty yellow plume rose from the Milk Specialties processing plant, forcing 90 employees to evacuate. About 10 square blocks in the industrial and residential Southwest Side were  blocked off and also evacuated. Hazmat workers attempted to contain a leak. The leak was presumed to be chlorine used in producing whey and milk proteins. The leak was discovered about 11:40 a.m. Five hours later the source of the leak still wasn’t identified. There were no injuries. Address: 325 Tompkins Street.

Verbatim

Peter O’Leary, fire chief: “One of the concerns we have is what the wind is doing on days like today. When the air is thick and there’s little windm it’s actually harder because those vapors end up not dissipating in the atmosphere as fast.”

Hazmat attack. Trained hazardous materials workers pumped water into pipes to try to locate the gas leak. At nightfall, the source of the gas was yet to be identified. Also on site: Federal OSHA inspectors.