|
The Dartmoor tin mining industry is thought to have originated in pre-Roman times,〔Newman 1998, p.4.〕 and continued right through to the 20th century. From the 12th century onwards tin mining was regulated by a Stannary Parliament which had its own laws. Tin is smelted from cassiterite, a mineral found in hydrothermal veins in granite, and the uplands of Dartmoor, in Devon, England, were a particularly productive area. The techniques used for the extraction of tin from Dartmoor followed a progression from streaming through open cast mining to underground mining. Today, there are extensive archaeological remains of these three phases of the industry, as well as of the several stages of processing that were necessary to convert the ore to tin metal. ==Stannary laws== (詳細はMining became such an important part of life in the region that as early as the 12th century, tin miners developed their own set of laws (stannary laws) and, ultimately, their own parliaments (Stannary Parliaments). These laws applied to anyone involved in the industry. Stannaries were established in Tavistock, Ashburton and Chagford by King Edward I in 1305. Plympton followed soon after. The Devon stannary parliament met in an open air forum at Crockern Tor from 1494.〔Finberg 1950, p.296.〕 Anyone who broke a stannary law could find himself imprisoned in the gaol at Lydford. The stannary courts were abolished in 1836. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Dartmoor tin-mining」の詳細全文を読む スポンサード リンク
|