Biscuit fire nearly surrounded 08/24/02ALEX PULASKI Firefighters pushed control lines closer around the Biscuit fire Friday, and hope to have its 240-mile perimeter sewn up by this weekend. From Our Advertiser Twenty-plus miles of line remained to be built around the Biscuit blaze, the biggest fire in the United States this year. The most critical stretch remains along the fire's western edge, near the Pistol River. Randy Shepard, a fire spokesman, said 10 hand crews were pressing south in rough terrain. Aided by bulldozers and three crews working toward the north to meet them, firefighters hope to tie the two...