| | Owner | Manager | From | Until |  | Canada Cement Transport Ltd. - Montreal, Quebec, Canada |  | 1929/08 | 1968 |  | J.D. Irving Ltd. - Saint John, NB, Canada |  | 1968 | 1972 |  | Richelieu Dredging Corporation Inc, McNamara Corporation & J.P. Porter Company Ltd. - Canada |  | 1972 | 1979/12 | 
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