As will become apparent, we’re talking about six mighty machines that have been designed to help launch spacecraft, put out forest fires, and keep trains running in the snow. Enjoy.
Just for fun: Mega Machines!
They’re not subtle, they’re not always pretty and they’re often – but not always - quite slow. They do, however, provide the muscle to make big things happen.
April 1886: the Brunkebergs tunnel
First ever example of a ground source heat pump?