Dump truck was hauling a load of Ceder bolts . The driver lost control on a steep downhill grade . When his brakes failed he plowed into a ditch at the bottom of the steep grade . We were approx 6 miles up Dell Creek road just east of Naselle WA . We used both the Z Kenworth and the International wreckers to recover the truck . I then towed it to Hoquiam WA .