A professional who tends revolving drum that tumbles fur pelts in moist sawdust and fuller's earth to soften pelts and clean fur used in making felt hats. Respnsibilities include:

• Opens bales of skins, using knife or wirecutter.
• Shovels sawdust and fuller's earth into drum, pours water onto sawdust and fuller's earth, and stirs with shovel until sawdust and fuller's earth are saturated.
• Dumps skins into drum and starts drum revolving for specified time or until skins appear sufficiently clean and soft for further processing.
• May shake sawdust and fuller's earth from pelts.