BRONZEX

Part X

In celebration of your imminent transition to the Stainless Steel Tech Level, let's review some of the knowledge from the puzzles. After all, steel is the most recycled material in the world!

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Hints to solve:

1) Main constituent in drywall, fertilizer

2) Byproduct of papermaking, a binder

3) Molten rock (under the Earth’s surface)

4) Crushed glass ready for recycling

5) Common toy made out of ABS

6) Additive in bronze, spelled out

7) Periodic symbol for main metal in steel