This technique for extracting gold was discovered by chemist Carl Wilhelm Scheele in 1783, and was later developed in 1887 by John Seward MacArthur.
- Gold cyanidation
- Gold zincanization
- Hydraulic mining
- Gold panning
Answer
The correct answer is A) Gold cyanidation.
More History questions
- Many people seeking an easy fortune emigrated to California, USA during the California Gold Rush (1848-1858). The gold rush was sparked by the discovery of gold near this city.
- One of the earliest gold rushes was probably the Spanish search for the mythical city of El Dorado. According to early legends, the King of the Muiscas would do this as part of a religious ceremony.
- Which of the following was NOT an Egyptian pharaoh?
- Which was the first Egyptian pyramid?
- What was Cleopatras ethnic background?
- Who unified Upper and Lower Egypt?