[10] Greenway was appointed to the South Australian School of Mines in 1898, as a replacement for Adam Adamson, who had recently died.
On 30 January 1902, Greenway, by then manager of the Block 14 smelting works at Port Adelaide, was driving a trap along the Ocean Steamers Wharf Road to the Block 14 company's smelting works at Port Adelaide with an assistant named Joseph Winter, when at a bend they were "bailed up" by a pair of masked highway robbers, one of whom had a revolver with which he shot dead the pony; they made off with the company payroll of over £1200.
[13] Alfred Lawson and Myles Flynn were charged with the offence, found guilty and sentenced to twenty years' jail.
[18] Greenway settled in Melbourne, and became manager of the Potter Sulphide Ore Treatment Company in 1909.
[19] In Victoria, Greenway was prominent in urging the Peacock and Bowser Ministries (1914–1918) to develop brown coal extraction in Gippsland.
[21] In 1924, Greenway was appointed chairman of directors of Commonwealth Oil Refineries Ltd,[22] and was succeeded in 1926 by Major W. L. W. Bird.
Mrs Greenway was in 1924 president of St. Martin's Boys' Home, Auburn, auxiliary at St Kilda.