Clay McDonald

Provides rail freight haulage services

The International Heavy Haul Association (IHHA) is a scientific and technological organization dedicated to advancing heavy haul railway operations, engineering, maintenance, and technology. The private company is located in the US. It fosters worldwide collaboration among railways transporting bulk commodities such as coal, grain, and iron ore, and its membership includes national and state heavy haul railway associations, private railway systems, and key industry players from multiple countries. IHHA promotes knowledge exchange and industry advancement through international and regional conferences, specialist seminars, technical sessions, and publishing peer-reviewed articles and best practice guideline manuals on topics like wheel-rail interface management and infrastructure maintenance. The association also supports emerging professionals through training workshops, awards, sponsorships, and honors outstanding contributors.