Richard Blackburn Black Rear Admiral, United States Navy: A member of the United States Navy Reserve who assisted Rear Admiral Richard E. Byrd in explorations of Antarctica, died on August 10, 1992, in the Fernwood Nursing Home, Bethesda, Maryland.
The Plastics Recycling Conference is the focal point for the increasingly complex and international plastics recycling industry. The event brings together plastics reclaimers, equipment manufacturers, brand owners, brokers, government officials and leading sustainability voices from around the globe to deepen connections and push the sector forward.
Panning for gold or silver is a type of traditional, placer mining where gold or silver ore is extracted from a placer deposit using a pan. This method is among the simplest and is quite popular with geology enthusiasts because it is fairly inexpensive and easy to do. Placer mining originated in ...
Copper mining in the United States has been a major industry since the rise of the northern Michigan copper district in the 1840s. In 2017 the United States produced 1.27 million metric tonnes of copper, worth $8 billion, making it the world's fourth largest copper producer, after Chile, China, and Peru.