A worker runs a spinning machine on a concrete floor.
A worker is sanding a brown cement floor in a construction atmosphere.
a man using a buffer on a floor to buff out the marks.
Someone is working on a floor with an industrial floor machine.
A person uses a large floor sander to smooth out concrete.
a person polishing a floor with a polishing machine device
A man is using a sander to sand the floor of a room.
A worker uses an industrial buffer on a concrete floor.
A man is using a large sanding machine on the surface of concrete.
Sanding the floor of a room using a large piece of equipment that spins around.