Associated Portland Cement Manufacturers
The cement combine formed in 1900, which took over Gibbs & Co. at Purfleet that year and worked the quarry and Thames works until both closed in the early 1920s.
Mines operated
| Mine | Region | Years |
|---|---|---|
| Eastern Quarry | Kent | ?–1990 |
| Purfleet Chalk Pits | Essex | 1900–1920 |
Record created: 3 September 2026 · Last researched: 3 September 2026