Toxic briquettes, that are still strewn in bushes and shrubs along I-15 in central Utah, prevented public safety officials from opening the highway to traffic again Saturday.

A Utah Highway Patrol dispatcher said the 60-mile stretch from Scipio to Cove Fort likely won't be opened until late Monday _ if that soon.

Some 240 gallons of sodium cyanide briquettes spilled early Thursday morning when a semitrailer truck lost part of its load.

According to UHP Trooper Nelson Aimes, 90 percent of the bulk has been removed, but the remainder is scattered throughout the area.

A hazardous waste material team has been working around the clock to neutralize the area