The International Society for Trenchless Technology
	JAPAN Society for Trenchless Technology
	Australasian Society for Trenchless Technology
	Associação Brasileira de Tecnologia não Destrutiva
	German Society for Trenchless Technology
	Indian Society for Trenchless Technology
	De Nederlandse vereniging voor Sleufloze Technieken en Toepassingen
	North American Society For Trenchless Technology
	United Kingdom Society for Trenchless Technology
	Czech Society for Trenchless Technology
	France Sans Tranchées Technologies
	Scandinavian Society for Trenchless Technology
	Southern African Society for Trenchless Technology