The industrial process for refining gold ores uses cyanide in one of the processing steps. Good thing he didn't try that process for a DIY project. He's alrea

The industrial process for refining gold ores uses cyanide in one of the processing steps. Good thing he didn't try that process for a DIY project. He's already insane enough for using concentrated sulfuric acid without a fume hood, emergency shower/eyewash station, and full face shield.