Sentence:  The work of the <WSD>panmen</WSD> consists in moving, from time to time, towards the back of the pan the salt forming in its front part, by means of iron rakes (with a head 12 x 6 inches and a shank 12 feet long and 1 inch thick) introduced through the upper, free openings of the doors, and in pushing down into the liquor the crusts of salt forming in its front part, by means of iron rakes (with a head 12 x 5 inches and a shank 12 feet long and 1 inch thick) introduced through the upper, free openings of the doors, and in pushing down into the liquor the crusts of salt forming on the surface, as otherwise all evaporation would cease. 
Meaning of the word marked with <WSD> tags:  One who oversees the making of salt in a panhouse.