Obs25 Jun 2020 15:51
I came across the below when trying to find out more on the JP Jindal deal. So far, I only have the 70 million figure and no more details. But thought this may be of interest. I think the main article is about the gold mine.
IRON ORE DEPOSITS, THE MINE OF JINDAL
The iron resource in the area of Jindal Group easily reaches 500 million tons of mineable iron ore. MMX Mineração explored that portion of the iron formation and, supported on a proven resource of 267 million tons, reshuffled the railway from Serra do Navio to Santana and the port formerly used by ICOMI, built one washing and concentration plant and ancillary installations, and initiated the mining. With the operation going at full speed, it was sold to Anglo American do Brasil, included in the same deal that involved the selling of the Minas-Rio Project, in the state of Minas Gerais. During 2012, Anglo produced and sold 6 million tons. In 2013, at about the occasion when an accident affected the structure of the port, the project was sold to Zamin, which have not provided the recovery of the port and interrupted the activities. The Jindal Group has acquired the property and is recovering the mine, the port and the railway.
The accident at the port was due to the clayous and fragile nature of the margin of the Amazon River. In the engineering of the port, ICOMI avoided heavy installations at the margin of the river, installing instead a floating deck, tied to two +100 meters long vertical piles fixed in compact layers of sediment found below the fragile sediments. For nearly 50 years, the manganese ores were transported to the ships via an elevated conveyor supported on the floating deck and on a safe point away of the margin of the river. Probably ignoring the reason of that engineering and without access to the construction project, the new port operators set auxiliary installations and activities close to the the margin of the river, causing the accident.
The mineable ore varies from massive, when originated from oxidized magnetite-rich iron formation, to friable, derived from less oxidized hematite-rich iron formation (Fig. 15). In every case, magnetite is replaced by martite, silicates are leached, and limonite cements the fragments (Fig. 16). The weathering gets to more than 100 meters of depth, and invariably the outcrops are massive and very hard, formed by well cemented martite, hematite and limonite. Friable hematitic iron formation, occasionally indicated by a few residual blocks in canga, are only exposed on excavations and road cuts.
Link - https://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892017000400703
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