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of St. Just, and Market Jew Street, Penzance, mechanical engineers
1800/1 Nicholas Holman went into business as a blacksmith.
1830 N. Holman and Sons was established
1856 Listed as Nicholas Holman and Sons, Market Jew Street, Penzance. Ironfounders, engineers and agricultural implement makers. 
1856 William Holman died
1894 N. Holman and Sons was incorporated as a limited company.
1914 Mining, shipping and general engineers. Specialities: Cornish ranges, mitre machines, engines and boilers for mines, mine castings and general mining material. Employees 95 to 100. 
1922 Directors: F. Holman, F. W. Holman, E. B. Holman, P. D. Holman and W. Holman. Specialities: Mining machinery, ship and boiler repairs, iron foundries, Cornish cooking ranges, agricultural implements, etc.
1971 Still in business as shipping engineers.