Harold Wragg worked in the Electricity Department of the
local authority of Sheffield, England, as a young man, but by 1906 had been
appointed chief engineer to the Penhalonga Proprietary Mines and Rezende Mine,
just north of Umtali (now Mutare), Southern Rhodesia (now Zimbabwe). Later he
contributed a paper on 'Water power plants, with special reference to the power
plants of the Rezende Mines, Ltd, Penhalonga, Southern Rhodesia' to the Transactions of the South African Institute
of Electrical Engineers (1915, Vol. 6(6), pp. 160-).
In June 1906 Wragg married Bertha Frances Walker.