Reserves don't mean Production

Just because something exists in the ground, doesn't mean it's going to be extracted. It depends on the required energy being available.

At the time it was finished the (DC) Washington Monument was topped with aluminum, at the time it was more of a precious metal than gold.

The energy needed to make one new aluminum can is the same as the energy needed to recycle twenty aluminum cans.

The energy saved from recycling one aluminum can is enough to run a TV set for 3 hours and a 100 watt light bulb for 4 hours.

Recycling 1 aluminum can saves enough energy to run a 100-Watt bulb for 20 hours; a computer for 3 hours; or a TV for 2 hours
[EPA]