 Complete the following phrase:  Mulvany qualified through practical experience as an engineer. He learned technical drawing with an architect and joined the Irish Survey Office at the age of 20 years as a surveyor. In 1836 he became an employee of the Board of Public Works in Ireland. Mulvany was successively responsible for planning of waterways and the modernization of the fishing industry, but especially for the purpose of drainage of large areas of agricultural exploitation. During the 