Correspondence from W. Robinson of Soho Foundry Maryborough to the Director of the Ballarat School of Mines. The letter is on letterhead which includes details for Abraham Robinson, Engineer, iron and brass founder, boiler maker, blacksmith, etc. The correspondence related to two samples of tailings for assay.soho foundry maryborough, abraham robinson, w. robinson, assay, ballarat school of mines, engineer, brass founder, iron founder, boiler maker, blacksmith