Sewers

Paris Unclogs Its Sewers With Giant Balls Of Iron

Paris Unclogs Its Sewers With Giant Balls Of Iron

Though it’s been around since the Middle Ages, the sewer system beneath Paris won fame in the 19th century, when the city offered boat tours through the tunnels. This is also when an ingenious method for cleaning clogged tunnels was devised. It involves giant balls of iron and a lot…