Here's the badboy of core drilling machines. KATX is probably using this (or something similar)
TECHNICAL SPECIFICATIONS
CAPACITY
( 3500 ft ) by core drilling
Max Capacity - 30 tons (66000 lbs)
Max Height - 8mtr (27 ft)
Rod handling capacity - 6.1 mtr (20ft)
HYDRAULIC OIL COOLER 90 GPM fin type cooler PULL UP AND PULL DOWN By means of twin hydraulic cylinder (125 x 70 x 2650) and wire rope Reeving Ratio 1:3
Max Pull up force - 18410 kgs (40500 lbs)
Max Pull up speed - 30 mtr / min
Max Pull down force - 12635 kg (27800 lbs)
Max Pull down speed - 44 mtr/min
MAIN WINCH Maximum pull up at 1st layer - 10 tons
Maximum pull up speed at 1st layer - 45 m/min
Rope diameter - 18mm WIRELINE WINCH Maximum pull up at 1st layer - 2 tons