American Shotcrete Association
	AUA
	ISEE
	ITA - AITES
	TAC
	The American Institute of Mining, Metallurgical, and Petroleum Engineers
	The Beavers - Heavy Engineering Construction Association
	ACUUS
	ASCE - American Society of Civil Engineers
	Colorado School of Mines
	Department of Labor - Mine Safety and Health Administration (MSHA)
	FHWA
	Geo-Institute
	IME
	ISRM
	Microtunneling Resource Center
	SME
	TAC
	The Beavers - Heavy Engineering Construction Association
	UTRC
	Tunnelling Forum.com - A forum for tunnelling professional to discuss and share their experiences on issues within the tunnelling industry. A website with international news and regulation updates and supporting engineers with their professional development