Wausau. Wis., Oct. 26.- Soon after noon a.n explosión wrecked the boiler room of the Wausau Excelsior works. The flreman, Joseph Brown, had just put in some fuel into the flrebox when a blast which nearly demolished the building followed. The doors of the fireplace and ash pit were broken to pieces, the flue caps blown off, the boiler slightly moved, and the walls so badly bro-' ken that they will have to be torn down and rebuilt and Brown was knocked down and badly burned, but his injuries are not ?erious. The wreek caught fire but the blaze was quickly extinguished. There is said to be little doubt that the accident was the result of malice and that the fuel ■was loaded with dynamite Gr some other explosive in an attempt to destroy the plant. A rigid investigation is bting made.