after world war ii, the us wanted to guarantee the supply of cobalt ore for military uses as the germans had been doing and prospected for cobalt within the u.s. border. an adequate supply of the ore was found in idaho near blackbird canyon in the side of a mountain. the firm calera mining company started production at the site.
the economy of argentina is an upper middle-income economy for fiscal year 2019 according to the world bank. it is the second-largest in south america behind brazil. argentina benefits from rich natural resources, a highly literate population, an export-oriented agricultural sector, and a diversified industrial base. argentina's economic .
lists by country. jump to navigation jump to search. this is a series of lists by country. the lists generally cover topics related to sovereign countries; however, states with limited recognition are also included. topical .
ore grades as little as 0.5 parts per million ppm can be economical. typical ore grades in open-pit mines are 1–5 ppm; ore grades in underground or hard rock mines are usually at least 3 ppm. because ore grades of 30 ppm are usually needed before gold is visible to the naked eye, in most gold mines the gold is invisible.
mining in argentina is an important regional producer of minerals, including primary aluminum, lead, copper, zinc, silver, and gold.. in 2003 the value of nonfuel mineral production totaled $1.1 billion, of which copper concentrate alone accounted for $467 million.
toxic cough syrup refers to a number of incidents in which one of ingredients in cough syrup, glycerine glycerol , has been replaced with diethylene glycol leading to mass poisonings. diethylene glycol is a less-expensive alternative to glycerine for industrial applications; however, diethylene glycol is nephrotoxic and can result in multiple organ dysfunction syndrome mods , especially in .
by early 2017, priests began telling venezuelans to label their garbage so needy individuals could feed on their refuse. in march 2017, despite having the largest oil reserves in the world, some regions of venezuela began having shortages of gasoline with reports that fuel imports had begun.