Industrial waste is even more harmful since there are many highly poisonous materials in it, such as copper and lead.

工业废料更有害，因为其中有许多毒性很强的材料，如铜和铅。

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He layered pieces of glass and used thin copper strips instead of lead, which let him make these really intricate flowery designs for stained glass, which he used in lampshades.

他把玻璃分层，用薄铜片代替铅，这让他对彩色玻璃做了这些非常复杂的华丽设计，用在灯罩上。

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Massive ore deposits of copper, lead, zinc, silver, gold and other metals formed in this way.

ECONOMIST: Minerals

Copper and lead have been the most commonly targeted metals with the price for both of them peaking during March.

BBC: Police from Forth Valley Division to target metal thieves

It had resources: oil, gas, copper, lead, iron ore.

NEWYORKER: Election, Monitored