The deepest mine in the world is the East Rand mine, which goes to a depth of about 3,585 metres.

It is possible to lead a cow upstairs but not downstairs.

In Canada, the $1 and $2 come in the form of coins. The $1 is nicknamed a "loonie" because it contains a loon on it and the $2 is nicknamed the "twonie" because it is the equivalent of two "loonies."

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