By Leonard Unthank Salkield (auth.), Maurice J. Cahalan (eds.)

ISBN-10: 9400933770

ISBN-13: 9789400933774

ISBN-10: 9401080178

ISBN-13: 9789401080170

Whether the Phoenicians and t he within the south-west of the Iberian Carthaginians ever truly labored Peninsula there's a colossal pyritic the mines , or have been purely investors, is mineral ised region, referred to as the no longer definite , yet after 205 BC, while Andevallo, extending from close to they defeated the Carthagi nians, the Seville to south of Lisbon, a space Romans introduced their very own males expert a few one hundred fifty kilometres lengthy and 30 in mining and metallurgy. kilometres broad. The Romans occupied many of the The Rio Tinta Mines , that are the Iberian Peninsula for six hundred years , greatest of this "pyrites belt" , lie until eventually approximately 425 advert - the latest within the zone referred to as Andalusia, Roman cash came upon at Rio Tinto exhibit a few ninety kilometres north-west of the top of Honorius who used to be emperor Seville and seventy five kilometres north-east from 395 to 423 advert. Mining needs to of Huelv8 . they've got a really lengthy have declined with the invasion of heritage, courting again to pre-Iberian Barbarians within the fifth century and the days; then got here the Iberians , a race next entr y of the Visigoths who of North African beginning (Turdetarian have been finally absorbed into the and Tartessian) , the Phoenicians , the folk of Spain. In 711 advert the Carthaginians , the Romans , the Moors, Moors invaded the Peninsula from the Spaniards and the British. It North Africa.

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Extra info for A technical history of the Rio Tinto mines: some notes on exploitation from pre-Phoenician times to the 1950s

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The prevalence of wind and rain consequently exercises a considerable influence over the calcination . The exposure to strong currents of air gives rise to fusion of a considerable portion of the sulphurets and the decomposition of the sulphates which pass into oxides and insoluble salts and during the heavy rains the sulphate of copper must be washed away as soon as formed. "The calcined mineral is carried on the backs of mules or donkeys to the lixiviation tanks. 25 metres wide by 1 deep . " Of the mine itself , Lee Thomas wrote : "It contains six levels .

J - ~'-r' "'--. ; ,.... \ -' . ;' '. Copper produced by cementation in this way was more pure than that obtained by cementation from mine drainage wa t er and was separately refined; the latter , known as "cascaria de la caneria!! and containing significant arsenic, was refined in the reverberatory furnace with black copper. Around 1841 , a D Felipe Prieto visited the mines and saw the roasting of the cupreous pyrites for the smelter - he claimed he knew a process which could recover copper from the l ow copper content pyrites then being discarded .

It is thought that Cerda took delivery of ore near the Roman adit of San Pedro and, to save transport , roasted it in the same area , very near the village, Rio Tinto pueblo. The location of his Fabrica de Cerda is sho~n on the 1878 plan. Cerda's story is told in some detail by David Avery(l); his operations ceased in 1858 when it was recognised that they were similar to those of the Planes Company. His enduring legacy to Rio Tinto is that the area to the south-east where his roasting heaps were located has been known as Cerda for generations .

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A technical history of the Rio Tinto mines: some notes on exploitation from pre-Phoenician times to the 1950s by Leonard Unthank Salkield (auth.), Maurice J. Cahalan (eds.)

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