the largest man made hole, and largest machines... German coal mine "Hambach"

Full gallery and story at http://www.fastcoexist.com/3031997/take-a-trip-to-this-horrifying-mine-one-of-the-largest-man-made-holes-in-the-world#1

memorizing railroad building machine... just watching construction equipment is fascinating stuff

Found on http://jalopnik.com/the-ten-weirdest-one-off-work-vehicles-1562984103 

when the semi breaks down and has an excavator on the back... you still aren't stuck, just inconvenienced

you don't see that every day!

Found on http://sploid.gizmodo.com/what-to-do-if-your-truck-runs-out-of-gas-and-you-carry-1549033927

how to field assemble a P 47 Thunderbolt.... awesome training film, skip the first 3minutes 30sec

skip the first 3minutes 30sec

Found on http://www.warbirdsnews.com/warbirds-news/fun-facts/uncrating-field-assembly-p-47-thunderbolt-fighter-1944.html

ever just want to fix a damn road? This would be the machine to get the job done, the twin Detroit Deisel engined Euclid TC12

Found on http://bangshift.com/general-news/motorized-freak-of-the-week-the-euclid-tc-12-bulldozer/

The machine weights about 35 tons and is powered by not one, but two 6-71 Detroit Diesels. The secret to the tractor’s power is the fact that each motor drove one side of the tracks. In the video clip  you can hear this thing in all its cantankerous glory. Those two-strokes certainly sound good when they are working hard.

The first version of this beast was built in 1953 after GM had acquired Euclid. Engineers figured out a way to join two Euclid C-6 bulldozers side by side and make one humongous machine. Everything was doubled. There were two motors, two Allison transmissions with torque converters, two hoods, two radiators, but only one operator.