Hollings, P., 2021. Genesis and geochemistry of porphyry deposits. Intensive Earth Sciences Modular Course - Exploration for Hydrothermal Ore Deposits: Genesis and Exploration. April 11, 2021.

Hollings, P., 2020. Metallogeny and magmatism of the 1.1 Ga Midcontinent Rift. Mineral Deposits Division-Volcanology and Igneous Petrology Division webinar, 23 July 2020 (82 participants).

Hollings, P., Smyk, E., Baker, M., Cooke, D., 2019. Geochemistry and geochronology of the porphyry-related intrusions of the Wasatch Mountains, Utah: implications for porphyry mineralization. Institute of Geochemistry, Chinese Academy of Sciences, Guiyang China, September 17, 2019.

Hollings, P., Cooke, D., D’Angelo, M., Cao, M., Smyk, E., Baker, M., Chen., H., 2019. Tectonics, magma fertility and the formation of porphyry deposits. International symposium on porphyry Cu-Au-Mo mineralization systems. Institute of Geochemistry, Chinese Academy of Sciences, Guiyang China, September 16, 2019.

Hollings, P., Cooke, D., D’Angelo, M., Cao, M., Smyk, E., Baker, M., Chen., H., 2018. Tectonics, magma fertility and the formation of porphyry deposits. International symposium on porphyry Cu-Au-Mo mineralization systems, Beijing, September 8-15, 2018.

Hollings, P., 2018. Geochemistry of the Middle Lower Yangtze Basin: Investigating tectonic change and the implications for mineralization. International Conference on the Metallogeny of the Middle and Lower Yangtze Metallogenic Belt. Hefei University of Technology, China, July 12-13, 2018.

Hollings, P., Cooke, D., D’Angelo, M., Cao, M., Smyk, E., Baker, M., Chen., H., 2018. Tectonics, magma fertility and the formation of porphyry deposits. Resources for Future Generations Conference, Vancouver, June 16-21, 2018.

Hollings, P., 2018. Using igneous petrology to unravel the tectonic triggers for porphyry mineralization. Keynote presentation, GAC Newfoundland and Labrador Section, Annual Technical Meeting, St. John’s Newfoundland, February 19-10, 2018.

Hollings, P., Cooke, D.R., Agnew, P., Baker, M., Chang, Z., Wilkinson, J.J., White, N.C., Zhang, L., Thompson, J., Ahmed, A., Gemmell, J.B., Fox, N., Chen, H., Wilkinson, C.C., 2017. Porphyry Indicator Minerals (PIMS) and Porphyry Vectoring and Fertility Tools (PVFTS) – Indicators of mineralization styles and recorders of hypogene geochemical dispersion halos. Keynote presentation, Quebec Mines 2017, 20-23 November, 2017. http://mern.gouv.qc.ca/en/quebec-mines/program/conferences/.

Hollings, P., 2017. Tectonic controls on porphyry mineralization. Chinese Academy of Sciences, China, June 2017.

Hollings, P., 2015. CESME - The Future of Sustainable Mining Development in Ontario. Aboriginal Business in Green Mining Regional Learning Roundtable Eastern Canada Session, Aboriginal Affairs and Northern Development Canada (AANDC), March 25^th 2015, Thunder Bay, Ontario.

Hollings, P., 2014. Tectonic controls on porphyry mineralization. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China, December 2014.

Hollings, P., 2014. Tectonic controls on porphyry mineralization. Henan Polytechnic University, Jiaozuo, China, December 2014.

Hollings, P., 2014. The nature of Archean tectonics. Ore Deposit and Exploration Centre (ODEC), School of Resources and Environmental Engineering, Hefei University of Technology, China, October 2014.

Hollings, P., Sweet, G., Baker, M. and Cooke, D.R., 2013. Tectonic triggers for porphyry Cu-Au mineralization in Northern Luzon, Philippines. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China, November 2013.

Hollings, P. and Smyk, M., 2013. Metallogeny and geochemistry of the Midcontinent Rift of N America. Ore Deposit and Exploration Centre (ODEC), School of Resources and Environmental Engineering, Hefei University of Technology, China, November 2013.

Hollings, P., Sweet, G., Baker, M., Cooke^, D.R. and Friedman, R., 2013. Tectonomagmatic controls on porphyry mineralization: Geochemical evidence from the Black Mountain porphyry system, Philippines. Keynote presentation, Whistler 2013: Geoscience for Discovery, September, 2013.

Hollings, P., Cooke, D.R., and Chen, H., 2013. Cenozoic and Mesozoic copper and gold deposits of the Chilean Andes. DMEC workshop series: Exploring undercover in a world-class copper belt of Chile, PDAC March, 2013.

Cooke, D.R., Baker, M., Wilkinson, J.J., Chang, Z., Chen, H., Gemmell, J.B., Hollings, P., Zhou, T., Ireland, T., and Wilkinson, C.C., 2012, New advances in geochemical exploration for porphyry deposits in green rock environments: 34th International Geological Congress, Brisbane, Australia, 5–9 August.

Gemmell, J.B., Cooke, D.R., Chang, Z., White, N., Hollings, P., and Wilkinson, J., 2012, Metal dispersion around porphyry Cu-Mo-Au deposits: Implications for fluid flow and exploration: Gordon Research Conference, New Hampshire, USA, 15–20 July.

Hollings, P., Cooke, D.R., Wolfe, R., Sweet, G., and Baker, M., 2012. Tectonic triggers for porphyry Cu-Au mineralization in Northern Luzon, Philippines. University of Minnesota – Duluth, Research Presentation. Duluth, Minnesota, October, 2012.

Hollings, P., 2011. Nickel-copper-PGE mineralisation in the Midcontinent rift of North America. ARC Centre of Excellence in Ore Deposits, University of Tasmania, June 17, 2011. 

Cooke, D.R., Gemmell, J.B., Chang, Z., White, N.C., Hollings, P., Deyell, C.L., 2011. New advances in geochemical exploration for porphyry deposits in lithocap and green rock environments. Prospectors and Developers Association of Canada International Convention, March 6-9, 2011. 

Hollings, P., Isaac, C., Wyman, D. and Biczok, J., 2010.  Isotopic and geochemical research at Musselwhite Mine.  Musselwhite Mine research conference, Thunder Bay, Ontario, June 8, 2010

Hollings, P., 2009. Volcanic geochemistry: Insights into the tectonic controls on ore deposits and metallogenesis. In: Ore Deposit Geochemistry, Hydrology and Geochronology, Short Course Notes, ARC Centre of Excellence in Ore Deposits, University of Tasmania, June 16, 2009.

Hollings, P., 2009. Magma genesis and ore deposits. Sources and sinks in hydrothermal systems - a two-day shortcourse, Mineral Exploration Roundup 2009, Vancouver, B.C., January 24 & 25, 2009.

Cooke, D.R., Gemmell, J.B., Chang, Z., White, N.C., Hollings, P., Deyell, C.L., 2009. The porphyry-epithermal transition: Geological, exploration and economic implications. ProExplo 2009 - 6th International Congress of Prospectors and Explorers, Lima, Peru. May 2009.  

Hollings, P., 2007. Industry-university research partnerships: how they work and how you can benefit. Ontario Exploration and Geoscience Symposium, Sudbury, Ontario. December 11-12, 2007.

Hollings, P., 2007. Geochemistry of the 2.7 to 3.0 Ga Uchi subprovince: implications for Archean tectonic processes. Archean Symposium 2007: A global comparison of Archean terranes.University of Western Ontario, London, Ontario. August 20-21, 2007. 8-9.

Hollings, P., 2006. Applying academic research to mineral exploration. Marathon-Hemlo Mining and Prospecting Expo, Marathon, Ontario, September 19th, 2006.

Hollings, P., Fralick, P., Kissin, S., Richardson, A., and Metsaranta, R., 2005 Geology, geochemistry and ore deposit genesis in the Nipigon Embayment. CIM Annual Meeting, Toronto, Ontario, April 24-27, 2005. P.117.

Hollings, P., Richardson, A.,  Metsaranta, R., Fralick, P., 2004. Lake Nipigon Region Geoscience Initiative: Geochemical and stratigraphic evidence for multiple magma sources for the Nipigon sills. Ontario Exploration and Geoscience Symposium, Toronto, Ontario. December 13-15, 2004.

Hollings, P., Cooke, D., Cannell, J., and Walshe, J. 2004. Giant porphyry deposits - Characteristics, distribution and controls. Canadian Institute of Mining and Metallurgy - Thunder Bay Branch, Technical Presentation. Thunder Bay, Ontario, October 19, 2004.

Hollings, P., Cooke, D., Cannell, J., and Walshe, J. 2004. Giant porphyry deposits - Characteristics, distribution and controls. University of Minnesota - Duluth, Research Presentation. Duluth, Minnesota, October 21, 2004.

Hollings, P. and Wyman, D., 2004. The Geochemistry of Trace Elements in Igneous Systems: Principles and Examples from Basaltic Systems. In Linnen, R., and Samson, I. (Eds), Rare Element Geochemistry and Ore Deposits, Geological Association of Canada Short Course, St Catherines, May 10 & 11, 2004.

Hollings, P., 2003. Geochemical Tools for Gold Exploration. Northwestern Ontario Mines and minerals Symposium 2003. Archean Lode Gold deposits in Ontario. Shortcourse, April 2003