15 Matching Annotations
  1. May 2019
    1. Tin is extracted by roasting the mineral casseterite with carbon in a furnace to approximately 2500 degrees Fahrenheit. The next step involves leaching with acid or water solutions to remove impurities. Electrostatic or magnetic separation helps to remove any heavy metal impurities. Compared to the processes used in the past, today’s advanced technology allows the industry to produce 10 times more tin. General Kinematics’ vibratory equipment innovation has made them a leader in the production of mining equipment for more than 45 years. A great many of the challenges faced by miners can be solved with the use of top quality vibratory equipment. With a proven track record in 35 countries, General Kinematics is making their mark on the future of tin mining.

      tin refining

    1. The Indonesian islands of Bangka and Belitung produce over 90 percent of the country's tin. President Joko Widodo has vowed to end illegal mining operations that put the lives of men and children in danger.

      That's a lot of tin! Glad the president is putting some safer laws regarding tin!

    1. 1China110,0002Indonesia95,2003Peru23,6684Bolivia19,3005Brazil12,0006Myanmar11,0007Australia6,4748Viet Nam5,4009Malaysia3,70010Congo, The Democratic Republic Of The3,00011Rwanda1,90012Lao People's Democratic Republic80013Nigeria57014Russian Federation42015Thailand20016Uganda4017Portugal4018Burundi20 Source: United States Geological Survey (USGS) Minerals Resources Program

      Tin production

  2. Dec 2018
    1. while boys’ and girls’ achievements in STEM subjects were broadly similar in all countries, science was more likely to be boys’ best subject,”

      genetic???????????? or because of the gender bias??????

    2. as societies become wealthier and more gender equal, women are less likely to obtain degrees in STEM. The researchers call this a “gender-equality paradox.”

      ok that is very surprising

    3. they lose more girls because of personal academic strengths,” Geary said. “In more liberal and wealthy countries, personal preferences are more strongly expressed.

      Because girls aren't being forced to do science there are less of them in scientific fields... glad I get to choose my career path!

    4. boys’ academic strengths tend to be in science or mathematics, while girls’ strengths are in reading. Students who have personal strengths in science or math are more likely to enter STEM fields, whereas students with reading as a personal strength are more likely to enter non-STEM fields, according to David Geary, Curators Professor of Psychological Sciences in the MU College of Arts and Science. These sex differences in academic strengths, as well as interest in science, may explain why the sex differences in STEM fields has been stable for decades, and why current approaches to address them have failed.

      I don't know if this is because of opportunity or DNA.....

    1. a disgraced Google engineer filed a lawsuit claiming white conservative men are the true victims of Silicon Valley.

      haaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa funny joke.

    1. 36% of this group found it hard to see how science classes would be useful to them in the future.

      not to be rude to people who want to go into STEM, but I low key agree with this statement, at least when it comes to my own future.

    2. “This ‘other-ness’ exists intentionally or unintentionally between those of a minority and those of a majority from lacking of common cultural background. Relationships at work appear polite on surface but reluctant tendency in willing to share limited opportunities the same way, which I felt in a previous job where whites and males were overwhelmingly a majority.” – Asian woman, engineer, 56
    3. one-in-five women in STEM and non-STEM jobs say they have experienced sexual harassment at work

      it happens in any place, any city, any country.

    4. “People automatically assume I am the secretary, or in a less technical role because I am female. This makes it difficult for me to build a technical network to get my work done. People will call on my male co-workers, but not call on me.”
    5. a job cluster which includes computer scientists, systems analysts, software developers, information systems managers and programmers
    6. speech language pathologists and 95% of dental hygienists.
    7. sales engineers (7%) and mechanical engineers (