From blog.unpopular-truth.com
Dr. Lars Schernikau
Content
Metallurgical-grade silicon making
Carbon sources for silicon making: Coal, petcoke, hardwood
Solar-grade silicon (SoG-Si) making and wafering
Finalizing solar panel manufacturing
Coal and China
Summary
Coal...
Greenfield, Iowa, is the latest town added to this year’s poignant U.S. list of tornado-shattered communities. A powerful twister raced through Greenfield on...