Abstract: An agricultural machine includes a swath information acquiring module, a first determining module to determine a traveling path of an automatic operation based on a position of a swath, a setting module to set a work continuation width based on the traveling path, a second determining module to determine, when there is a manual operation by a worker during the automatic operation, whether the agricultural machine during the manual operation is within the work continuation width, and an executing module to execute the automatic operation. The executing module restores the agricultural machine to the traveling path after a termination of the manual operation and continues the automatic operation when the agricultural machine is within the work continuation width, and cancels the automatic operation when the agricultural machine is determined to be not within the work continuation width.

Abstract: A side wall for a UHP electric arc furnace includes water cooled panels positioned within the outer shell of the furnace. The panels form water channels and have multiple fins projecting inwardly from the panel into the furnace. The panels including the fins are formed of pure copper or copper alloy which has a high heat conductivity. The fins have a thickness of at least 10 mm and they project horizontally inwardly toward the furnace for at least 70 mm. The fins are spaced vertically apart in the range of 30-80 mm. The space between the fins is filled with a castable refractory.