Mercury arc rectifier, switching AC/DC current at a 102 year old elevator. —Reminds me of that old .pdf that got scrubbed off Google and DuckDuckGo about all the uses of Mercury (medical, hair, lotions, old fire places, cars, etc).
Generating electricity? Would this be the kind of technology that Tartaria had and that is being suppressed?
![Not OP [Is this antique-tech?]](https://cdntube.b-cdn.net/thumbnails/469c344f4baa07e6bd1dbcc224bb295fed4c21df.jpg?v=19700101120000)