Napa CHP officers are hoping witnesses to a multi-car, fatal collision on Highway 12 Monday can help with the investigation.

A driver of a 1997 Ford Escort died in the 10:35 a.m. crash. The driver's name wasn't being released early Tuesday pending notification of his family, said a Napa County coroner's official.

The massive collision closed the Jamison Canyon stretch of Highway 12, that leads to Highway 80, for about eight hours, the CHP said.

Just west of the Napa/Solano county line, his car crossed into the path of a big rig and started a chain reaction collision that included two other passenger vehicles, the CHP said.

Eight people in other cars were taken to area hospitals with minor and moderate injuries.

Driver Vincent Zediker, 41, of Montague was driving for Cal Fire in a 2000 Mack big rig, hauling a firefighting dozer. He was headed east and then back up to Siskiyou County after completing a supportive role in the recent 700-acre Solano County Beacon fire, said a Cal Fire official.

The Escort, headed west at about 55 mph, got into the lane of the larger rig and they collided. The Ford then was pushed back into the westbound lane where the car hit a Toyota van driven by Charley Cha, 49, of Sacramento.

The rig, meanwhile, went out of control and hit a guard rail and then a Toyota Prius driven by Muriel Rollins, 58, of Pinole, CHP reported.

Seven people in Cha's van went to hospitals but no one was believed to have suffered serious injuries.

Rollins also went to a hospital with moderate injuries and rig driver Zediker wasn't injured.

The initial investigation indicated none of the drivers were speeding.

Officer Jaret Paulson asked anyone with information about the crash to call CHP officers in Napa County at (707)253-4906.