Christopher Harris Trezise died at the age of 55 on 28th September, 1956, after an operation in the Royal Infirmary, Sheffield.
He was born in Cornwall and received his mining training from 1917 to 1920 at the Camborne School of Metalliferous Mining. He began his career in 1921 as junior assistant in the mining department of Messrs. Mason and Barry at Mertola, Portugal, and three years later went to Canada, where he was-employed until 1926 at the Thetford mines of Consolidated Asbestos Co., as mine surveyor and assistant. There followed three months’ prospecting, sampling and examination in Newfoundland for a firm of mining and consulting engineers, and from September, 1926, to February, 1927, Mr. Trezise was assistant in the engineering department of Hollinger Consolidated Gold Mines at Timmins, Ontario.
He returned to Portugal during 1927 to work at Mina da Panasqueira for Beralt Tin and Wolfram Co., and in October, 1928, took up the position of assistant engineer to Bisichi Tin Co., Northern Nigeria, being in charge of deep alluvial tin mining. He was manager of Filani (Nigeria) Tin Mining Co., Ltd., from 1931 to 1937, and later managed Lower Bisichi (Nigeria) Tin Mines, Ltd., for eighteen months. Mr. Trezise then worked on the Gold Coast from 1941 to 1942, but returned to tin mining in Nigeria for the following three years. During 1947 and 1948 he took part in a prospecting expedition in Angola, then came to England to work at New Consols mine, Cornwall. He joined the Directorate of Opencast Coal Production in Wales in 1951, but from 1954 had again managed tin mines in Nigeria.
Mr. Trezise was elected a Student of the Institution in 1920 and was transferred to Associate Membership in 1930. He had been a member of the Canadian Institute of Mining and Metallurgy.
Vol. 66, Trans IMM 1956-57, p.632
