Counter balanced retractable ladders
Whitehaven Coal, Narrabri, Skyline Tripper. Twin Counter-balanced Retractable Units
A 1982 Commission from BHP, Port Kembla to create safe egress from Blast Furnace Charge Cars, initiated development.
With Production Losses and Cost of Plant being ‘off-line’ due to breakdown or Maintenance, critical elements of the BHP brief in that ‘high-dust’ environment and operational function was… NO, Grease, Oil, Hydraulics, Pneumatics or Electrics
Twelve being ultimately supplied across an ‘up-date schedule.
Accidents involving Operator use of Mobile and Tracked Plant ( Conveyors, Trucks etc) in the Mining Industry has generated renewed interest wherein the operational function of the units (automatic, non-reliant human activation/retraction), removes or relieves discipline due to ‘in-built’ design.
Winch operated retractable ladders
A conventional extension ladder that has been modified to incorporate a foldable-platform equipped trolley, which can be raised and lowered with an electrically powered winch.