A refinery was attached to the London Mint from 1816 to 1851, but was then let on lease and left to private enterprise.
Near Doboj, on the Bosna, there is a state sugar-refinery, for which beetroot is largely grown in the vicinity.
There is one large refinery at Villa del Mar, however, which imports raw cane sugar from Peru for refining.
The mud from the Ysel furnishes the material for large brick-works and potteries; there are also a celebrated manufactory of stearine candles, a yarn factory, an oil refinery and cigar factories.
Bock, however, in 1880 (Bergand hiittenmannische Zeitung, 1880, p. 411) described a process used at the North German Refinery in Hamburg for the refining of gold containing platinum with a small proportion of silver, lead or bismuth, and a subsequent patent specification (1896) and a paper by Wohlwill (Zeus.