In the late 1980s, the parks service in the United States were concerned about the deterioration of the stonework on the Lincoln Memorial. So they asked the maintenance staff why the stone was decaying.
The crew explained that they used high-power sprays every fortnight to clean the masonry. The water penetrated cracks and joins, weakening the stone.
Already a subscriber? Log in
Black Friday sale
Subscribe today and get 10 weeks of The Spectator Australia for just $1
- Unlimited access to spectator.com.au and app
- The weekly edition on the Spectator Australia app
- Spectator podcasts and newsletters
- Full access to spectator.co.uk
Or
Comments
Black Friday sale
Subscribe today and get 10 weeks of The Spectator Australia for just $1
SUBSCRIBEAlready a subscriber? Log in