# Copper

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Copper

Copper is a material that makes up some items. Copper really refers to a family of copper-alloyed metals, susceptible to corrosion but not rust and of a similar color.  In-game, copper items are referred to as "copper", "bronze", or "brass".
The prime example is the bronze plate mail. The other main copper items are light sources: the oil lamp, magic lamp and brass lantern.  Some musical instruments (bugles and bells, specifically) are also copper.  There are no copper weapons.
Three of the 28 randomized rings are always copper, as are two of the 27 wands.
Copper can be eaten by rock moles and xorns, so the player might benefit from eating a copper ring.
Polypiling copper objects may result in either a stone golem or a clay golem[1].

References

↑ zap.c in NetHack 3.6.0, line 1197

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