High on the vertical steel wall of a chemical tank, a silver figure walks with ease, unencumbered by safety harnesses. With one arm, it wields a welding torch with precision; with the other, it meticulously scans for flaws.

High on the vertical steel wall of a chemical tank, a silver figure walks with ease, unencumbered by safety harnesses. With one arm, it wields a welding torch with precision; with the other, it meticulously scans for flaws.

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