I repair/rebuild Caterpillar OHT ( Off Highway Truck )( Dump trucks in other words ) front & rear wheel end assemblies. I'm a motor mechanic by trade.
I work at night......and I'm not in the pics....coz I'm behind the camera....8)
I saw a Modern Marvels episode on da Tube on the construction of these behemoths. Totally cool! Holt Caterpillar is about 4 miles from where I work so I get to see these monsters daily.