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GMA is advancing the industry through advocacy and education
October 1st, 2019
By Jonathan Curry Advocacy and education are key to the mission of the Geosynthetic Materials Association. GMA, through its state and local advocacy program, met with the New York State Department of Environmental Conservation in 2015 and, as a result, developed a strategic relationship that created the Waste Containment System Design seminars, which have provided […]
Recovery of rare earth elements from acid mine drainage using geotextile tubes
October 1st, 2019
By Tom Stephens Acid mine drainage (AMD) has been occurring in the Appalachian region since coal mining began in the early 18th century. Over time, many mines reached the end of their useful life and production ceased or companies went out of business, resulting in AMD discharging from these abandoned mines into native streams and […]
A forty-year anniversary for the first hardbound book on geosynthetics
October 1st, 2019
By Robert M. Koerner In the late 1970s, I regularly invited speakers to make presentations to my geotechnical engineering classes at Drexel University. Two of them were very memorable: Bill Ragen of Mirafi and Bill Witherow of Carlisle. Their respective topics were “filter fabrics” and “pond liners,” and in truth I didn’t associate them with […]