All types of asbestos are known to cause extreme health issues after long-term exposure. They were widely used before bans introduced in 1996 & 1999.
Any exposure is hazardous, and it is important to remove all types of asbestos:
Blue Asbestos (Crocidolite): found in steam engine insulation, pipe insulation, plastic, and cement products (highest risk)
Brown Asbestos (Amosite): found in cement sheets, roofing, piping, insulation boards, ceiling tiles.
Chrysotile: found in roofs, ceilings, walls, floors, car brake linings, gaskets and boiler seals, and pipe insulation.
Anthophyllite asbestos: found in cement and insulation materials (less common).