











The country's highest court plays a critical role in all matters of federal law, yet it doesn't always have the final say. Congress's ability to check the court often depends on whether the court is interpreting the Constitution—in which case the court's opinion is generally final—or a federal statute, which Congress can more readily amend.





The prevailing process in the Cu–Pb–Zn ores processing on industrial scale is copper–lead bulk flotation with depression of zinc and then zinc flotation from tails. ... (d80 = 100 microns). The results of grinding in laboratory ball-mill showed that after 24 min, the sample size got reduced from d80 = 2000 to d80 = 100 micron. After ...











At a milling speed of 500 rpm, and BPR 12, the leaching concentrations of Pb, Cu and Zn decreased with increasing milling time as shown in Fig. 2.The leaching concentrations of Pb, Cu and Zn in untreated soil were 13.92 mg·L −1, 2.71 mg·L −1, and 114.31 mg·L −1, which were 273 times, 2.6 times, and 113 times higher than the Class …





The influence of different pH conditions and simulated inter-root environmental solutions on the release behavior of heavy metals (Cu, Pb, and Zn) from contaminated soils was investigated. The results indicate that heavy metal leaching from the soil is more likely to occur under acidic conditions and there is a risk of sustained …













In striking down the patents, the Supreme Court allowed other diagnostic companies to offer such tests without fear of infringement lawsuits. Signatories on the new letter—including plaintiffs who challenged the Myriad patents, and ACLU, which represented them—argue that if the proposed law is enacted, "We will again see high prices for ...















Michael Cargill, a U.S. Army veteran who owns a gun store in Austin, had to turn in two bump stocks that he owned to the ATF. After doing so, he went to court to challenge the rule. The U.S. Court of Appeals for the 5th Circuit struck down the rule in Cargill's case, prompting the Biden administration to come to the Supreme Court.
