| 1951 | TCL established as a subsidiary of Rugby Portland Cement Company Limited of the United Kingdom |
| 1954 | Commercial production of cement commenced |
| 1968 | Installation of Kiln 2 at TCL |
| 1976 | The Government of the Republic of Trinidad & Tobago (GORTT) purchases TCL from Rugby. |
| 1984 | Kiln 3 line commissioned at TCL |
| 1989/1990 | The GORTT divests its shareholding in the Company in two phases; GOTT shareholding reduced to 29.1% |
| 1994 | The GORTT sells 20% of its shareholding in TCL to Cemex S.A. of Mexico |
| 1996 | Kiln 4 commissioned at TCL; Kilns 1 & 2 retired |
| 1998 | The GORTT divests its remaining shareholding in the Company |
| 1999 | Record levels of clinker production and cement sales achieved even as Company hit when 30,000 tonnes of Thai cement is dumped on the domestic market |
| 1999 2005 2006 2006 | TCL achieves API Q1 and ISO 9002 Certification. Commissioning of Cement Mill 3 Introduction of TCL Premium Republic Bank Limited/ Business Development Company Award for Excellence In Business |