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As 99.9% pure thorium oxide, price per thorium contained. Free on Board port of entry, duty paid. 91: Pa: Protactinium: 15.37: 1.4×10 −6 [i] (3.878 × 10 10 kg) No reliable price available. In 1959–1961 Great Britain Atomic Energy Authority produced 125 g of 99.9% pure protactinium at a cost of $ 500 000, giving the cost of 4 000 000 USD ...
In the United States, the permissible exposure limit for lead in the workplace, comprising metallic lead, inorganic lead compounds, and lead soaps, was set at 50 μg/m 3 over an 8-hour workday, and the blood lead level limit at 5 μg per 100 g of blood in 2012. [320]
Prices were about $1,200 per tonne of lead in the July, then rose to $2,220 per tonne by September and collapsed back down to $1,200 per tonne in the October of that year. Despite the bullish market condition, the price had collapsed by the July 2009 and was only worth about $1,400 per tonne of lead. [ 103 ]
It found high levels of lead in 12 products, with levels reaching 3.5 parts per million. Paras cinnamon powder had the most lead, according to Consumer Reports, containing 3.52 ppm.
Testing by state programs and confirmed by the FDA found levels of lead that ranged from a little over 2 parts per million to about 7 parts per million in most of the spices, the agency said.
The World Health Organization (WHO) specifically notes that there is "no known safe blood lead concentration," and that even blood lead concentrations as low as 3.5 µg/dL (micrograms per ...
The Lucky Friday mine is an underground silver, lead, and zinc mine in the western United States, near Mullan, Idaho. [2] Operated by Hecla Mining company, it is one of the few mines remaining operational in the Silver Valley of northern Idaho, producing 1000 tons of ore per day. The ore deposit type is Polymetallic veins of hydrothermal origin.
A Consumer Reports' study found that grab-and-go meals like Lunchables can contain high levels of lead and sodium. ... Consumer Reports had sodium levels ranging from 460 mg to 740 mg per serving ...