ANSA McAL Limited is one of Trinidad and Tobago's largest conglomerates, with several diversified companies in the Caribbean, Europe and North America.
During that period, Alston & co. advertised its locations in the Port of Spain and was an agent for seven companies.
In 1914, the company Alston & co expanded its export and import business to also include ship chandlery, cargo handling and being an agent for steamships lines.
Alston & Company by agreement in 1935 with C. Tennant Sons took over trading operations in San Fernando.
In that time Sir Erol dos Santos had just retired from colonial service of Trinidad and Tobago, and was invited to join the board of Alston & Co Limited.
In 1972, construction began on the landmark Tatil Building in Port of Spain, which was completed in 1974.
Tatil Building rises 12 floors above ground and is 45.25 metres (148.5 ft) high.
In 1975, Conrad O'Brien was appointed Chairman of Charles McEnearney & Co. Ltd and the following year acquired shares of minority shareholders in the company.
That same year, ANSA McAL (US) Inc was founded as a US corporation in Miami serving as the company's worldwide procurement and logistics provider.