Wels, C., L. Smith, and R.D. Beckie (1997). "The Influence Of Surface Sorption On Dispersion In Parallel Plate Fractures" Journal of Contaminant Hydrology 28: 95-114.

Wels, C., L. Smith, and T.T. Vandergraaf, (July 1996): "The Influence Of Specific Surface Area On Transport Of Sorbing Solutes In Fractures: An Experimental Analyses" Water Resources Research 32 : 1943 - 1954.

Wels, C. and L. Smith (1994). "Retardation Of Sorbing Solutes In Fractured Media." Water Resources Res. 30: 2547-2563.

Wels, C., R.J. Cornett, and B.D. LaZerte (1991). "Hydrograph Separation: Comparison Of Isotropic And Chemical Tracers." J. Hydrology 122:253-274.

Wels, C., C.H. Taylor, R.J. Cornett, and B.D. LaZerte (1991). "Streamflow Generation In A Headwater Basins On The Precambrian Shield." Hydrological Processes 4: 505-512.

Wels, C., R.J. Cornett, and B.D. LaZerte (1990). "Groundwater And Wetland Contributions To Stream Acidification: An Isotropic Analysis." Water Resources Res. 26: 2993-3003.

Published Conference Proceedings

Wels, C., Findlater, L., and McCombe, C. (2007): Contaminant Load Estimates for the Historic Mount Morgan Mine Site, Queensland, Australia. In proceedings of WISMUT 2007 - Stilllegung und Revitalisierung von Bergbaustandorten zur nachhaltigen Regionalentwicklung, Gera, Germany 10-12th September 2007, pp 377-384.

Wels, C., Findlater, L., and McCombe, C. (2006): Assessment of groundwater impacts at the historic Mount Morgan Mine Site, Queensland, Australia. In proceedings of the 6th International Conference on Acid Rock Drainage, St Louis, Missouri, USA, March 26-30, 2006.

Wels, C., Robertson A. MacG., Madariaga, P.M. (2004): "Water Recovery Study for Pampa Pabellon Tailings Impoundment, Collahuasi, Chile". In proceedings of the 11th Annual Conference on Tailings and Mine Waste, Vail, Colorado, USA, 10-13 October, 2004.

Wels, C., Findlater, L., Shaw, S. and Laurencont, T. (2004): "Mt Morgan Mine - A Case Study of ARD Impacted Groundwater". In proceedings of Mine Water 2004 - Process, Policy and Progress Newcastle upon Tyne, United Kingdom 20-24th September 2004, pp 235-245.

Robertson, A. MacG. and Shaw, S. (2004): “The Multiple Accounts Analysis of Pit Backfilling”. Presentation published in proceedings of the 12th Annual Mine Design, Operations & Closure Conference, Polson, Montana, USA, 25-29 April, 2004.

Robertson, A. MacG., and Shaw, S. (2004): "Use of the Multiple Accounts Analysis Process for Sustainability Optimization". In proceedings of the SME Annual Meeting, Denver, Colorado, USA, 23-25 February, 2004.

Robertson, A. MacG., Llyod, T., and Robins, M. (2003): “Residue Disposal at Sadiola Hill Gold Mine: Stability Evaluation by Field Testing”. In proceedings of the International Mining Conference, Johannesburg, SA, 2003.

Wels, C. and Robertson, A. MacG. (2003): "Conceptual model for estimating water recovery in tailings". In proceedings of the 10th International Conference on Tailings and Mine Waste, Vail, Colorado, USA, 12-15 October 2003, pp. 87-94.

Wels, C., Lefebvre, R., and Robertson, A. (2003): "An Overview of Prediction and Control of Air Flow in Acid-Generating Waste Rock Dumps". In proceedings of the Sixth International Conference on Acid Rock Drainage, Cairns, Queensland, Australia, 14-17 July, 2003, pp. 639-650.

O’Kane, M., and Wels, C. (2003): "Mine Waste Cover System Design – Linking Predicted Performance to Groundwater and Surface Water Impacts". In proceedings of the Sixth International Conference on Acid Rock Drainage, Cairns, Queensland, Australia, 14-17 July, 2003, pp. 341-350.

Shaw, S., Wels, C., Robertson, A., Fortin, S., and Walker, B. (2003): "Background characterization study of naturally occurring acid rock drainage in the Sangre de Cristo Mountains, Taos County, New Mexico". In proceedings of the Sixth International Conference on Acid Rock Drainage, Cairns, Queensland, Australia, 14-17 July, 2003, pp. 605-616.

Wels, C. (2002). "Use of Waterloo Barrier in Progressive Reclamation of Hydrocarbon Plume" Proceedings of the 55th Canadian Geotechnical Conference, Niagara Falls, Ontario, October 20-23, 2002.

Wels, C., Fortin, S. & Loudon, S. (2002): Assessment of Store-and-Release Cover for Questa Tailings Facility, New Mexico. In Tailings and Mine Waste '02, proceedings of the Ninth International Conference on Tailings amd Mine Waste, Fort Collins, Colorado, USA, 27-30 January 2002, pp. 459-468.

Wels, C., Loudon, S. & Fortin, S. (2002): Factors Influencing Net Infiltration into Mine Rock Piles at Questa Mine, New Mexico. In Tailings and Mine Waste '02, proceedings of the Ninth International Conference on Tailings amd Mine Waste, Fort Collins, Colorado, USA, 27-30 January 2002, pp. 469-477.

Shaw, S., Wels, C., Robertson, A. & Lorinczi, G. (2002): Physical and geochemical characterization of mine rock piles at the Questa mine, New Mexico. In Tailings and Mine Waste '02, proceedings of the Ninth International Conference on Tailings amd Mine Waste, Fort Collins, Colorado, USA, 27-30 January 2002, pp. 447-458.

Lefebvre, R., Lamontagne, A. Wels, C., & Robertson, A. MacG. (2002): ARD Production and Water Vapor Transport at the Questa Mine. In Tailings and Mine Waste '02, proceedings of the Ninth International Conference on Tailings amd Mine Waste, Fort Collins, Colorado, USA, 27-30 January 2002, pp. 479-488.

Wels, C., O'Kane, M., Fortin, S. and Christensen, D.(2001) : "Infiltration Test Plot Study for Mine Rock at Questa Mine, New Mexico." Paper presented at the American Society for Surface Mining and Reclamation Conference, Proceedings Volume 1, pp. 195-209, June 2001, Albuquerque, New Mexico.

Wels, C., O'Kane, M., and Fortin, S. (2001) : "Assessment of Water Storage cover for Questa Tailings Facility, New Mexico." Paper presented at the American Society for Surface Mining and Reclamation Conference, Proceedings Volume 2, pp. 500-513, June 2001, Albuquerque, New Mexico.

Wels, C., Loudon, S. and Newman, G. (2001) : "Modeling of Alterntive Cover Scenarios for Mine Rock Piles at the Zortman and Landusky Mine Sites." In: National Association of Abandoned Mine Lands Annual Conference, August 19-22, 2001, Athens, Ohio.

Wels, C., Barnekow, M., Haase, M., Exner, M., and Jakubick, A.T.(2000): "A Case Stucy On Selfweight Consolidation Of Uranium Tailings". Paper presented at Uranium 2000; Conference held September 9-15, 2000, Saskatoon, Saskatchewan.

Wels, C., Robertson, A. MacG., and Jakubick, A.T.(2000): "A Review of Dry Cover Placement on Extremely Weak, Compressible Tailings". Paper published in CIM Bulletin, Vol. 93, No. 1043, pp. 111-118, September 2000.

Wels, C., Shaw, S., and Royle, M.(2000): "A Case History Of Intrinsic Remediation Of Reactive Tailings Seepage For Questa Mine". Paper presented at the ICARD 2000 Conference, Proceedings Volume 1, pp. 441-458, May 2000, Denver, Colorado.

Wels, C., Robertson, A.MacG., and Jakubick, A.T.(1999): "A Review Of Dry Cover Placement On Extremely Weak, Compressible Tailings". Paper presented at Sudbury '99 - Mining and the Environment II; Conference held September 13-15, 1999, Sudbury, Ontario.

Wels, C., Robertson, A.MacG., and Jakubick, A.T.(1999): "Cover Placement on Extremely Weak, Compressible Tailings". Paper presented at the Soft Tailings Stabilization Workshop, May 26-27, 1999, Edmonton, Alberta.

Wels, C., Robertson, A.MacG.,(1998): "Assessment and management of Risks relating to Covers for Metal Leaching and Acid Migration". Paper presented at the 5th Annual BC Metal Leaching/ARD Workshop, December 9 - 10th 1998, at Vancouver, BC.

Gyonnet, D.A., D.R. Lee, and C. Wels. 1989. Measurement Of Chemical Fluxes From Groundwater Into Surface Water. Project Report presented at Technology Transfer Conference, Toronto.

Wels, C., R.J. Cornett, and B.D. LaZerte. 1988. Meltwater Contributions To Spring Runoff In Acid Stressed Headwater Streams On The Canadian Shield. Proceedings of Canadian Hydrology Symposium, Banff, Alberta

Wels, C., R.J. Cornett, B.D. LaZerte, and P.J. Dillon. 1988. Changes In Stream Chemistry During Snowmelt Runoff In Two Headwater Catchments. Proceedings of Eastern Snow Conference, Lake Placid, N.Y.