Last Updated:2025/11/29

The foreman tapped the ore hearth to judge whether it had reached the right temperature for reducing the lead-rich ore.

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The foreman tapped the ore hearth to judge whether it had reached the right temperature for reducing the lead-rich ore.

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監督者は、鉛分の多い鉱石を還元する低い炉を軽くたたいて、適切な温度に達しているかどうかを確かめた。

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