Published Papers

Published Papers

Passive Treatment of Acid Mine Drainage with Limestone

Robert S. Hedin, George R. Watzlaf, and Robert W. Nairn

Journal of Environmental Quality, 1994

Passive Treatment of Coal Mine Drainage

Robert S. Hedin, Robert W. Nairn, and Robert L. P. Kleinmann

US Bureau of Mines Information Circular 9389, 1994

The Use of Measured and Calculated Acidity Values to Improve the Quality of Mine Drainage Datasets

Robert S. Hedin

Mine Water and the Environment, 2006

Acid Mine Drainage Flowing from Abandoned Gas Wells

Robert S. Hedin, Sherry L. Stafford, and Theodore J. Weaver

Mine Water and the Environment, 2005

Iron Removal by a Passive System Treating Alkaline Coal Mine Drainage (Lowber)

Robert S. Hedin

Mine Water and the Environment, 2008

Optimizing the Design and Operation of Self-flushing Limestone Systems from Mine Drainage Treatment

Hedin Environmental

Final report for Western Pennsylvania Coalition for Abandoned Mine Reclamation (WPCAMR), 2008

Passive Treatment of Acidic Coal Mine Drainage: The Anna S Mine Passive Treatment Complex

Robert Hedin, Ted Weaver, Neil Wolfe, and Kimberly Weaver

Mine Water and the Environment, 2010

Increasing Oceanic Carbon Fixation through Fe Fertilization: Opportunity for Mine Water?

Robert S. Hedin and Benjamin C. Hedin

Mine Water and the Environment, 2015

Characteristics of Solids Produced from Coal Mine Drainage and Their Suitability for Phosphorus Control in Dairy Manure Management

Robert S. Hedin, Benjamin C. Hedin, John T. Spargo, and Rachel Brimmer

Journal of Environmental Quality, 2020

Long-Term Performance and Costs for the Anna S Mine Passive Treatment Systems

Robert S. Hedin

Mine Water and the Environment, 2020

The Evaluation of Critical Rare Earth Element (Ree) Enriched Treatment Solids from Coal Mine Drainage Passive Treatment Systems

Benjamin C. Hedin, Rosemary C. Capo, Brian W. Stewart, Robert S. Hedin, Christina L. Lopano, and Mengling Y. Stuckman

International Journal of Coal Geology, 2019

Critical Metal Recovery Potential of Appalachian Acid Mine Drainage Treatment Solids

Benjamin C Hedin, Robert S. Hedin, Rosemary C. Capo, and Brian W. Stewart

Journal of Coal Geology, 2020

Determination and Prediction of Micro Scale Rare Earth Element Geochemical Associations in Mine Drainage Treatment Wastes

Benjamin C. Hedin, Mengling Y. Stuckman, Charles A. Cravotta III, Christina L. Lopano, and Rosemary C. Capo

Chemosphere, 2024

Passive Removal of Mn from Mine Water Using Oxic Aggregate Beds: Results of Two Pilot Systems

Robert S. Hedin, Neil A. Wolfe, and Benjamin C Hedin

Mine Water and the Environment, 2024

Conference Papers

Hedin Environmental staff regularly present research at conferences held by the organizations below and conference papers can be downloaded from the links below. Select conference papers are available below.

International Mine Water Association (IMWA)
International Conference on Acid Rock Drainage (ICARD)
National Association of Abandoned Mine Land Programs (NAAMLP)
American Society of Reclamation Sciences
West Virginia Mine Drainage Task Force (WVMDTF)
Pennsylvania Abandoned Mine Reclamation Annual Conference

Sustained Treatment of AMD Containing Al and Fe 3+ with Limestone Aggregate

Neil Wolfe, Robert Hedin, and Ted Weaver

IMWA, 2010

Effective Passive Treatment of Coal Mine Drainage

Robert Hedin, Theodore Weaver, Neil Wolfe, and George Watzlaf

NAAMLP, 2013

Temperature Independent Removal of Iron in a Passive Mine Water System

Robert S. Hedin

IMWA, 2013

Passive Treatment of Toe Drain Discharges from a Tailings Storage Facility using an Oxic Granite Bed

Robert S Hedin, Jeffery Millgate, Brian Authurs, Ron Nunn Pattrick, Vinath Khamsana, and Neil Wolfe

IMWA, 2015

The Complicated Role of Co2 In Mine Water Treatment

Robert S. Hedin and Benjamin C. Hedin

IMWA, 2016

Long-Term Minimization of Mine Water Treatment Costs through Passive Treatment and Production of a Saleable Iron Oxide Sludge

Robert S. Hedin

IMWA, 2016

Transforming Abandoned Mine Lands into a Botanic Garden

George R. Watzlaf

WVMDTF, 2017

Passive Treatment of Mn: Results from an Experimental Pilot System

Benjamin Hedin, Neil Wolfe, and Robert Hedin

IMWA, 2024

Carbonation of Mine Water to Increase Calcite Dissolution

Robert Hedin and Benjamin Hedin

IMWA, 2024

Passive Treatment Using Drainable Limestone Beds: Lessons from 14 Years of Design and Maintenance

Neil Wolfe, Robert Hedin, Benjamin Hedin, and Olivia Weaver

IMWA, 2024

A Method for Predicting the Alkalinity Generated by Anoxic Limestone Drains

George Watzlaf and Robert S. Hedin

WVMDTF, 1993