A look at the process of gold mining in Johannesburg. British Pathé . Congo Harvest Wealth Of The World (1950) Documentary about the influence of the white man on the trade of the Congo. British Pathé. Queen And Duke Visit Jos And Duke Visits Tin Mines (1956) Queen Elizabeth II and the Duke of Edinburgh arrive in Joss, Nigeria. British Pathé. Coffee Plantation Nr Kilimanjaro (1940 .