leverman
noun
lever·man
ˈlevə(r)mən,
ˈlēv-
plural levermen
: a man who operates levers or controls: such as
a
: towerman
a leverman on duty in the switch tower nearby was suspended soon after the accident 
New York Times
New York Times b
: a sawmill deckman
c
: a sawmill worker who controls the mechanism that transfers lumber from one set of conveyor rolls to another or from rolls to platform
called also rollerman
d
: an operator of a donkey engine for moving logs
e
: a member of a forging crew who handles billets during forging