DOT Code: 551.685-090

Industry: paper & pulp

Tends leach tanks that recover soda ash from black ash: Opens valve to admit water or weak liquor (soda ash) solution into leach tanks containing black ash. Starts agitators to stir mixture and dissolve soda ash. Withdraws samples of resultant solution and tests for concentration of soda ash, using hydrometer. Starts pump to circulate water or soda ash through leach tanks and into storage tanks until test samples contain specified concentration of soda ash. Shovels black ash into leach tanks as supply in tank becomes exhausted. Opens drain to remove insoluble charcoal residue from leach tanks after completion of recovery process.

GOE: 06.04.11 STRENGTH: L GED: R2 M1 L1 SVP: 3 DLU: 77