America’s infrastructure is built of sand, gravel, and crushed rock; collectively referred to as aggregate. And that is the topic of our 45th episode of the Arizona Mining Review - an interview with Eric Mears on gravel production and consumption in the Phoenix Metro area.
William B. White, Ph.D. and Professor Emeritus at Penn State’s Dept. of Geochemistry, is one of the world’s great authorities on cave formation and cavern features.
The Arizona Geological Society will host Dr. White’s presentation, ‘The Science of Caves and Cave Contributions to Science’. This hour-long presentation, with 15-minutes for questions, will paint a ‘broad brush overview of cave sciences in the 21th Century.’
- Author, geologist, and mining historian David Briggs' new contributed report, ‘History of the Verde Mining District, Jerome, Arizona’, revisits the long mining history of Jerome.
For 85 years, ending in 1996, the US Bureau of Mines (USBM) drafted and released 1000s of seminal reports on mineral resources and mining technology in the United States. The contents of those reports still have value. Unfortunately, access to USBM reports frequently proves difficult.
- Wildcat Peak is an ancient volcanic feature largely destroyed by erosion. Miles of resistant N-S feeder dikes still outcrop nicely.
- US Geological Survey's 2019 could be slashed. The result would be a 25% reduction in staff and a marked reduction services in such areas as natural hazard assessment and geologic mapping.
- The catastrophic debris flows that flattened Montecito, CA, are no stranger to Arizona. Just ask the residents below the Schultz Fire zone on the east flanks of Flagstaff's San Francisco Peaks.
- G.E.M. Environmental NFP (not-for-profit) is a fledgling organization whose chief goal is to champion geoscience students and help them gain the industry experience they need to be competitive job seekers.