Liberty City Sawmills
Liberty City Sawmills is a company in Trenton, Portland, Liberty City in GTA III and GTA: Liberty City Stories that makes timber, wood and furniture. The company also has branches outside Liberty City. Drilling can always be heard when on the rooftop or the level right below the rooftop. It is the first building seen on the left after driving past Greasy Joe’s Café (or Rusty Brown’s Ring Donuts as in GTA: Liberty City Stories.
A hidden package can also be found on the rooftop in GTA III. It is only accessible from the back by jumping onto a large vehicle and jumping the fence. There is usually a Rumpo parked here, which can be used for this purpose. The van is pictured moved into this position at the left of the screenshot. There is also an armor pickup and an Uzi on the roof.
In GTA: Liberty City Stories, the gate opens from the outside. There is a chainsaw behind the building next to a trailer. Unlike GTA III, there is nothing on the roof.