John Brennan, President, is an Avalanche and Explosive Specialist at the Aspen Highlands in Colorado, USA. He founded Avalanche Mitigation Services, Inc. in the summer of 2005 with the vision of offering: “Better Products at a Better Price."

National Ski Area Association’s Explosive Committee 2002-2014

American Avalanche Association Board of Directors 2004-2013

Avalanche Artillery Users of North America Committee 2006 - 2012

American Avalanche Association Journal (Fall 2002, June 2003, February 2004, February 2005, February 2006, December 2006, October 2007, February 2007, April 2008, October 2009, October 2009, February 2010, October 2010, September 2016, February 2017.)

Canadian Avalanche Association Journal (Spring 2004, Winter 2005, Winter 2007, Summer 2007, Summer 2008, Summer 2009, Fall 2009, Spring 2010, Summer 2010, Fall 2016, Summer 2017.)

New Zealand Mountain Safety Council journal (June 2006, June 2012)

International Society of Explosive Engineers Journal (September/October 2006, November/December 2010.)

Apatit Conference Proceedings, Kirovsk, Russia. September 2006

International Snow Science Workshop Proceedings, Telluride, USA October 2006.

National Ski Patrol magazine (Winter 2008)

International Society of Explosive Engineer’s Conference Proceedings, Denver, USA February 2009.

Canadian Institute of Mining Journal, December 2022.

American Avalanche Association from 1992

International Society of Explosive Engineers 1994-2015

International Glaciological Society 2000 - 2014

Canadian Avalanche Association from 2003

National Avalanche School, classroom and field modules 1993/1994

International Snow Science Workshops, 1994, 1996, 1998, 2000, 2004, 2006, 2008, 2010, 2012

Campbell Scientific Datalogger and software course, 1994

American Avalanche Institute, Level 3, 1999

International Glaciological Society’s Innsbruck, Austria Avalanche conference, 2000

Canadian Avalanche Association, Level 2- all modules, winter 2005/2006

Apatit International Avalanche conference, Kirovsk, Russia, 2006

International Society of Explosive Engineer’s Conference Denver, Colorado 2009