Barton has 50 years of experience from hundreds of rock mechanics and rock engineering projects in a total of 40 countries. most have concerned hydropower tunnelling and caverns; metro tunnels and station caverns; motorway tunnels; rock slope stability; and major dam abutment characterization. nuclear waste disposal research projects have been performed in several countries as well; in particular in the usa; in the uk and in sweden. he is frequently involved in tbm project trouble-shooting. in 2000 he started his own consultancy in norway: nick barton - associates. he obtained a ph.d. on rock slope stability from imperial college; london in 1971. he worked for 25 years in the norwegian geotechnical institute; part of the time as division director; and later as technical adviser. he is author-co-author of 330 papers in technical journals and conference proceedings; and author of a book on tbm tunnelling in jointed and faulted rock in 2000; and of a text book on rock quality; seismic velocity; attenuation and anisotropy in 2006. he is currently writing a rock engineering textbook with prof. stavros bandis.