Gold extraction the purity of gold. The parting of gold from silver has been done since ancient times starting in Lydia in the 6th century BC. Various techniques have been practised; salt cementation from ancient times, parting using distilled mineral acids from medieval times, and in modern times using chlorination using the Miller process and electrolysis using the Wohlwill process. Gold extraction Gold extraction refers to the processes required to extract gold from its ores. This may require a combination of comminution, mineral processing, hydrometallurgical, and pyrometallurgical processes to be performed on the ore. Gold mining from alluvium ores was once achieved
Ways to Live Forever Ways to Live Forever Ways to Live Forever is a children's novel by Sally Nicholls, first published in 2008. The author's debut novel, it was written when Nicholls was 23 years old. It won the 2008 Waterstone's Children's Book Prize, 2008 Glen Dimplex (Irish) New Writers Award, 2008 German and 2009 Bristol-based Concorde Children's Book Award. It was shortlisted for the 2009 Manchester Book Award. Sam Oliver McQueen is an 11-year-old boy with cancer. When his best friend Felix dies, he doesn't know what to do because he always looked up to him and his bad boy style. Sam is