|Organic substances in produced and formation water from unconventional natural gas extraction in coal and shale|
W Orem, C Tatu, M Varonka, H Lerch, A Bates, M Engle, L Crosby, ...
International Journal of Coal Geology 126, 20-31, 2014
|Radium content of oil-and gas-field produced waters in the Northern Appalachian Basin (USA): Summary and discussion of data|
EL Rowan, MA Engle, CS Kirby, TF Kraemer
US Geological Survey Scientific Investigations Report 5135 (2011), 31, 2011
|Quantifying natural source mercury emissions from the Ivanhoe Mining District, north-central Nevada, USA|
MA Engle, MS Gustin, H Zhang
Atmospheric Environment 35 (23), 3987-3997, 2001
|Hydraulic fracturing water use variability in the U nited S tates and potential environmental implications|
TJ Gallegos, BA Varela, SS Haines, MA Engle
Water Resources Research 51 (7), 5839-5845, 2015
|Atmospheric mercury emissions from mine wastes and surrounding geologically enriched terrains|
SM Gustin, M Coolbaugh, M Engle, B Fitzgerald, R Keislar, S Lindberg, ...
Environmental Geology 43 (3), 339-351, 2003
|Geochemical and isotopic evolution of water produced from Middle Devonian Marcellus shale gas wells, Appalachian basin, PennsylvaniaGeochemistry of Produced Water from …|
EL Rowan, MA Engle, TF Kraemer, KT Schroeder, RW Hammack, ...
Aapg Bulletin 99 (2), 181-206, 2015
|Discharges of produced waters from oil and gas extraction via wastewater treatment plants are sources of disinfection by-products to receiving streams|
ML Hladik, MJ Focazio, M Engle
Science of the Total Environment 466, 1085-1093, 2014
|Mercury exchange between the atmosphere and low mercury containing substrates|
MS Gustin, M Engle, J Ericksen, S Lyman, J Stamenkovic, M Xin
Applied Geochemistry 21 (11), 1913-1923, 2006
|Geochemical evolution of produced waters from hydraulic fracturing of the Marcellus Shale, northern Appalachian Basin: A multivariate compositional data analysis approach|
MA Engle, EL Rowan
International Journal of Coal Geology 126, 45-56, 2014
|The influence of ozone on atmospheric emissions of gaseous elemental mercury and reactive gaseous mercury from substrates|
MA Engle, MS Gustin, SE Lindberg, AW Gertler, PA Ariya
Atmospheric Environment 39 (39), 7506-7517, 2005
|Mercury distribution in two Sierran forest and one desert sagebrush steppe ecosystems and the effects of fire|
MA Engle, MS Gustin, DW Johnson, JF Murphy, WW Miller, RF Walker, ...
Science of the Total Environment 367 (1), 222-233, 2006
|CO2, CO, and Hg emissions from the Truman Shepherd and Ruth Mullins coal fires, eastern Kentucky, USA|
JMK O'Keefe, KR Henke, JC Hower, MA Engle, GB Stracher, JD Stucker, ...
Science of the total environment 408 (7), 1628-1633, 2010
|Wastewater disposal from unconventional oil and gas development degrades stream quality at a West Virginia injection facility|
DM Akob, AC Mumford, W Orem, MA Engle, JG Klinges, DB Kent, ...
Environmental science & technology 50 (11), 5517-5525, 2016
|Comparison of atmospheric mercury speciation and deposition at nine sites across central and eastern North America|
MA Engle, MT Tate, DP Krabbenhoft, JJ Schauer, A Kolker, JB Shanley, ...
Journal of Geophysical Research: Atmospheres 115 (D18), 2010
|Environmental signatures and effects of an oil and gas wastewater spill in the Williston Basin, North Dakota|
IM Cozzarelli, KJ Skalak, DB Kent, MA Engle, A Benthem, AC Mumford, ...
Science of The Total Environment 579, 1781-1793, 2017
|Characterization and cycling of atmospheric mercury along the central US Gulf Coast|
MA Engle, MT Tate, DP Krabbenhoft, A Kolker, ML Olson, ES Edgerton, ...
Applied Geochemistry 23 (3), 419-437, 2008
|Geochemistry of formation waters from the Wolfcamp and “Cline” shales: Insights into brine origin, reservoir connectivity, and fluid flow in the Permian Basin, USA|
MA Engle, FR Reyes, MS Varonka, WH Orem, L Ma, AJ Ianno, TM Schell, ...
Chemical Geology 425, 76-92, 2016
|Gas emissions, minerals, and tars associated with three coal fires, Powder River Basin, USA|
MA Engle, LF Radke, EL Heffern, JMK O'Keefe, JC Hower, CD Smeltzer, ...
Science of the total environment 420, 146-159, 2012
|The Tiptop coal-mine fire, Kentucky: Preliminary investigation of the measurement of mercury and other hazardous gases from coal-fire gas vents|
JC Hower, K Henke, JMK O'Keefe, MA Engle, DR Blake, GB Stracher
International Journal of Coal Geology 80 (1), 63-67, 2009
|Surface disposal of produced waters in western and southwestern Pennsylvania: Potential for accumulation of alkali-earth elements in sediments|
KJ Skalak, MA Engle, EL Rowan, GD Jolly, KM Conko, AJ Benthem, ...
International Journal of Coal Geology 126, 162-170, 2014