The article discusses this. They attempted to wash it off the building and failed.
Scrape it off. Lose a millimeter of the stone. Not the end of the world. These are self inflicted bullshit costs that cripple the government. Use common sense. If it's legally impossible, then update the laws to be sane.
alt Hacker News
Scrape it off. Lose a millimeter of the stone. Not the end of the world. These are self inflicted bullshit costs that cripple the government. Use common sense. If it's legally impossible, then update the laws to be sane.