Harrisburg Area Geological Society

HAGS The purpose of the Harrisburg Area Geological Society (HAGS) is to stimulate geologic thought, advance and disseminate geologic knowledge, and provide fellowship amongst area individuals interested in earth sciences. Monthly meetings (at GTS Technologies at 441 Friendship Road in Harrisburg) present a realm of geologic topics, ranging from tectonics, coal, carbonate groundwater geochemistry, Martian geomorphology, engineering geophysics, nuclear waste repositories, and ore mineralogy. Field trips allowed members to visit geologic sites within and beyond Pennsylvania. All events are open to the public and free unless otherwise stated. Meetings are at GTS Technologies, 441 Friendship Rd, Harrisburg, PA 17111. They occur at 6:30 PM on the second Thursday of the month, except summer months.

Officers: President- Kent Littlefield-

Vice-president- Bill Bruck-

Treasurer-Mike Meyer-

Secretary- Amy Randolph-  

 Up coming events :10-11-18 HAGS mtg Gray REE in coal

Rare Earth Elements in Coal

Presented by:  Tom Gray, P.E. Tetratech(also HAGS’s Treasurer)

When:     Thursday October 11, 2018

Time:       6:30 PM

Where:    AEG Offices 441 Friendship Road, Harrisburg, PA 

Abstract: Rare Earth Elements (REE) are important strategic and critical materials utilized in many high-technology applications including defense and renewable energy. Production of REE currently is dominated by China. Publicly available data from the USGS was used to determine that REE are present in many coal basins of the United States. Study results conclude that REE occurrences in coal and associated waste materials has the potential of being a domestic source of REE and could add a potential new revenue stream to existing coal mining operations. Mr. Gray will discuss findings to date and recommendations to make this opportunity a viable endeavor.

Speaker Bio:  Mr. Gray received a Bachelor of Science Degree in Mining Engineering from the Pennsylvania State University in 1973 and a Master of Business Administration from the University of Pittsburgh in 1977.

He started his career at U.S. Steel’s Frick Coal District in PA and later joined Dravo Engineers and Constructors, during which time he worked on the development of many coal mines, the Strategic Petroleum Reserve, the Waste Isolation Pilot Plant (WIPP) project, and the design and construction of a new steel mill in Canton, Ohio. Mr. Gray subsequently joined GAI Consultants in Monroeville, PA, spending 21 years working on numerous mining projects and serving as Branch Manager of the company’s Charleston, WV operations. He was hired by Tetra Tech in 2007 and currently manages their mining practice in the eastern U.S. and is the corporate lead for mine closure and abandoned mine land reclamation.

Mr. Gray is a Professional Engineer in five states and has more than 40 years of professional experience with technical expertise in mining engineering, mine reclamation, coal ash disposal and utilization, watershed and ecosystem restoration, mine subsidence, mine-influenced water treatment, mine stabilization via grouting, and abandoned mine fire mitigation. He specializes in active and abandoned mining projects and in infrastructure projects that have mining-related concerns.

Mr. Gray is a Past Chairman of the Pittsburgh Section of the Society for Mining, Metallurgy & Exploration (SME) and is an SME Distinguished Member (2009) and Pittsburgh Section Distinguished Member (1997).
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~November 8, 2018Muhammed Babar, P.G. and Mike Knight, P.G., Gannett Fleming – Geological Mapping of Qatar (partnership between Gannett Fleming and USGS)

January 10, 2019 – Talor Walsh, Assistant Professor of Geology, Millersville University – research on subsurface fracturing and its impacts on fluid flow

February 14, 2019 – HAGS is currently working on a possible speaker

March 14, 2019 – Mark Tucker – South Mountain volcanics

April 11, 2019 – Larry Smith, P.G. – fossils in amber

May 9, 2019 – Don Gaffney, P.G., Michael Baker International – topic to be announced at a later date 


HAGS Guidebooks, available for purchase, $5 each, plus $2 S7H. Multiple books may have discounted shipping.

1st Annual Field TripGeology in the South Mountain area, Pennsylvania, Noel Potter, Jr., editor, April 24, 1982, Reprinted 1992. 37 p. $5.00 plus $2.00 S&H.

2nd Annual Field Trip‐ Geology along the Susquehanna River, south‐central Pennsylvania, J. Ronald Mowery, editor, April 16, 1983, 55 p. $5.00 plus $2.00 S8H.

3rd Annual Field Trip‐ Stratigraphy, structural style, and economic geology of the York‐Hanover Valley, G. Robert Ganis and David Hopkins, April 28,1984, 51 p. $5.00 plus $2.00 S&H.

4th Annual Field Trip‐ Pennsylvania’s polygenetic landscape, William D. Sevon, April 27, 1985, Reprinted 1992, 55 p. $5.00 plus $2.00 S&H.

5th Annual Field Trip‐ Selected geology of Dauphin and Northumberland Counties, Pennsylvania, by W. D. Sevon, W. E. Edmunds, G. R. Ganis, and J. P. Wilshusen, May 17, 1986, 22 p. $5.00 plus $2.00 S&H.

6th Annual Field Trip‐ Lower Jurassic diabase and the Battle of Gettysburg, D. T. Hoff, J. R. Mowery, and G. R. Ganis, April 25, 1987,17 p. plus appendices. $5.00 plus $2.00 S&H.

7th Annual Field Trip‐ The geology of the Lower Susquehanna River area, a new look at some old answers, Glenn H. Thompson, Jr., editor, May 7,1988, 56 p. $5.00 plus $2.00 S&H.

8th Annual Field Trip‐ Karst development and environmental geology in the carbonate rocks of the Lehigh and Lebanon Valleys, William E. Kochanov, April 29, 1989, 33 p. $5.00 plus $2.00 S&H.

In cooperation with the 20th annual Binghamton Geomorphology Symposium at Dickinson College‐The rivers and valleys of Pennsylvania, then and now, by William D. Sevon, October 20, 1989, 59 p. $5.00 plus $2.00 S&H.

10th Annual Field Trip‐ The Ridge and Valley Physiographic Province and the East Broad Top Railroad, William D. Sevon, June 1, 1991, 24 p. $5.00 plus $2.00 S&H. 1

1th Annual Field Trip‐ Paleozoic geology of the Paw Paw‐Hancock area of Maryland and West Virginia, Marcus M. Key and Noel Potter, Jr., May 9,1992, 25 p. $5.00 plus $2.00 S&H.

12th Annual Field Trip‐ South Mountain and the Triassic in Adams County, Pennsylvania, Raymond Britcher, editor, May 22, 1993, 41 p. $5.00 plus $2.00 S&H.

13th Annual Field Trip‐ Geology of the Lebanon Valley and western end of the Reading Prong, Charles Scharnberger, editor, April 23. 1994, 68 p. $5.00 plus $2.00 S&H.

15th Annual Field Trip‐ Pseudo‐Morainic Topography of the Allentown Area of Eastern Pennsylvania, Duane D. Braun and William E. Kochanov, May 4, 1996, 28 p. $5.00 plus $2.00 S&H.

16th Annual Field Trip‐ Notes on the Hamburg Klippe: biostratigraphy, ash layers, olistostromes, and “exotics,” G. Robert Ganis, April 26, 1997, 52 p. $5.00 plus $2.00 S&H

17th Annual Field Trip‐ Geomorphology in the Northern Cumberland Valley, PA, including the Carlisle Deluge of 1779, Noel Potter, Jr., Donald Hartman, and Helen Delano, April 18, 1998, 49 p, $5.00 plus $2.00 S&H.

18th Annual Field Trip‐ The Cove Syncline by canoe, William M. Roman and Michael A. Knight, May 15, 1999, 16 p. plus maps, Out of Print

19th Annual Field Trip‐ Geology of the Kishacoquillas Valley and vicinity, Mifflin County, Pennsylvania, Michael A. Knight and William M. Roman, May 20, 2000, 18 p. plus maps and sections, $5.00 plus $2.00 S&H.

20th Field Trip‐ Geology and Geomorphology of the South Mountain Area, Cumberland and Franklin Counties, Pennsylvania, Noel Potter, Jr., and William D. Sevon, May 14, 2011, 64 p., $5.00 plus $2.00 S&H.

21st Field Trip‐ Shermans Creek from Dellville to Duncannon, Perry County, Pennsylvania, William Roman, May 12, 2012, 48 pages, color, $5.00 plus $2.00 S&H.

22nd Field Trip‐ Some geological aspects of the north side of the Cumebrland Valley in Cumberland County, PA, Bill Sevon, May 4, 2013, 33 pages, large font, color photos, $5.00 plus $2.00 S&H.   No formal guidebooks were prepared for the 9th (1990) and 14th (1995) Field Trips. The 2001 trip was a repeat of the 2000 trip.