Pulhamite


Pulhamite was a patented anthropic rock material invented by James Pulham of the firm James Pulham and Son of Broxbourne in Hertfordshire. It was widely used for rock gardens and grottos.

Overview

Pulhamite, which usually looked like gritty sandstone, was used to join natural rocks together or crafted to simulate natural stone features. It was so realistic that it fooled some geologists of the era. The recipe went to the grave with the inventor. Modern analysis of surviving original Pulhamite has shown it to be a blend of sand,
Portland cement and clinker sculpted over a core of rubble and crushed bricks.
It can be viewed in these places: