Selected downloads: Click here to donwload the PDF with all front pages 1971-2020 (25mb). Click here to donwload the PDF with all front pages from 2021 (500kb). The links below are organized in chronological order and in standard reference style. Click on titles to download the .zip file. Page 1 | 2 | 3 | 4 2004. Barton and Grimstad-The Q-system following 30 years of development. Eurockm Salzburg 2004. Barton and Infanti-Interpretation of exceptional stress levels. Kyoto ITA Barton Infanti 2004. Barton and Quadros-Underground pressures. International Water Power and Dam Construction, Jan p28-32 2004. Barton-Fault zones and TBM. Risk in Tunnelling. Aveiro, Portugal 2004. Barton-High pressure pre-grouting. TTI Sept 2004 p28-30 PART I 2004. Barton-High pressure pre-grouting. TTI Sept 2004 p28-30 PART II 2004. Barton-Risk and risk reduction in TBM tunnelling. Keynote, 3rd. Asian R.M.symp.Kyoto 2005. Blindheim - A critique of Qtbm. Tunnels and Tunnelling International. 2005. Barton-Comments on 'a critique of Qtbm' by BLINDHEIM 2006. Barton-Fracture induced seismic anisotropy.Beijing 13th IWSA 2006. Barton-TBM tunnelling in sheared and fractured rock masses. Cartagena, Colombia 2006. Barton, N. Integrating Q-logging with seismic refraction, permeability, pre-grouting, tunnel and cavern support needs, etc. Keynote, Hong Kong. 2007. Barton and Abrieu-City metro tunnels and stations that should have been deeper 2007. Barton-Anisotropy and 4D caused by two fracture sets, four compliances and sheared apertures 2007. Barton-Near-surface gradients of rock quality, deformation modulus, Vp and Qp to 1 km depth. First-Break 2007. Barton-Rockmass characterization for excavations in mining and civil engineering. Keynote. RMC workshop, Vancouver 2007. Barton-Thermal over-closure of joints and rock masses, implications for HLW repositories, ISRM Cong., Lisbon 2007. Barton-Time lapse interpretation using fracture shear phenomena. EAGE, London 2007. Barton, N. Future directions in rock mass characterization - cross-disciplinary. Vancouver 2008. Barton and Bieniawski-Setting records straight 2008. Barton-A unique metro accident in Brazil caused by multiple factors. 2nd Brazilian Conf., Sao Paulo 2008. Barton-A unique Metro accident in Brazil. Tunnels and Tunnelling International 2008. Barton-Important aspects of reservoir and crustal permeability and strength to several kilometers depth.Symp. Tehran 2008. Barton-Invited editorial., J. Rock Mech & Tunn. Tech., India 2008.Barton N-Seismic - combining borehole characterization. Colombia 2008. Barton-Shear strength of rockfill, interfaces and rock joints, and their points of contact in rock-dump design. Keynote. Australia 2008. Barton-TBM tunnel construction in difficult ground. Colombia 2008. Barton-The main causes of the Pinheiros cavern collapse.COBRAMSEG, Buzios 2008. Barton-Tragic collapse of a station cavern during construction of the São Paulo metro 2008. Barton, N. Fracture characterization for 4D. AAPG-SPE-SEG Hedberg Res. Conf. poster 3, Casper, Wyoming 2008. Barton, N. Most productive fractures. AAPG-SPE-SEG Hedberg Res. Conf. poster 1, Casper, Wyoming 2009. Barton-Intergrating Q-logging, seismic etc for tunnel and cavern etc. Keynote, Hong Kong 2009. Barton-Letter to the Editor. The Pinheiros Disagreement 2009. Barton-Main causes of the Pinheiros cavern collapse. ITA congress, Budapest 2009. Barton-Metro construction at the most unfavourable depth. Keynote. Eurock, Croatia 2009. Barton-TBM prognosis in hard rock with faults using Qtbm. Keynote, Hong Kong 2010. Barton, Gammelsæter-Application of Q-system and Qtbm to Oslo-Ski tunnels. Nordic Rock Mech Symp. Kongsberg 2010. Barton-Low stress and high stress phenomena in basalt flows. Keynote. Int, Workshop on Volcanic Rocks, Tenerife 2010. Barton-TBM prognoses for hard rock with weakness zones, using open-gripper or double-shield solutions. Keynote, Prague 2010. Barton-TBM prognosis for open-gripper and double-shield machines tunnelling throughhard rock with weakness zones. Helsinki 2011. Barton and Pandey-Numerical modelling using degradation of c and mobilization of phi. Int.J.Rock Mech 2011. Barton - An engineering assessment of pre-injection in tunnelling. Keynote, 3rd Indian Rock Mech. Conf. 2011. Barton - Assessing pre-injection in tunnelling. Tunnelling Journal Dec2011, Jan 2012 2011. Barton - From Empiricism, Through Theory, to Problem Solving in Rock Engineering. 6th Muller Lecture 2011. Barton - From Empiricism, Through Theory, to Problem Solving in Rock Engineering. Shortened version .6th Muller Lecture 2011. Wittke and Sommer - Designs in jointed rock. World Tunnelling, 2011 2011. Barton - Letter to the Editor. A measured response. World Tunnelling. sept 2011 2011. Barton - World Tunnelling WT interview p. 10-13 2011. Vrkljan, Barton-Interview by Prof. Vrkljan. Zagreb, ISRM newsletter 2012. Barton - Shear strength criteria for rock, rock joints, rockfill, interfaces and rock masses , ISModel, Beijing. 2012. Barton - Reducing risk in long deep tunnels by using TBM and drill and-blast in the same project - The hybrid method. Chinese Academy of Engineering, Wuhan, JRMGE 2012. Barton, N. Defining NMT as part of the NATM SCL debate. TunnelTalk 2012. Barton, N. Hybrid TBM and Drill-and-Blast from the start.Tunnelling Journal 2013.Barton, N. Challenges and empirical solutions when tunnelling. Water Power, Jan 2013 2013.Barton, N. Characterization of fracture shearing for 4D interpretation of fractured reservoirs. Muscat, EAGE workshop, 5p. 2013.Barton, N. Errors in constitutive modelling of rock, rock joints and rock masses. Abstract for Eurock, Wroclow, 2013. 2013.Barton, N. Geomechanics and geophysical processes in naturally fractured reservoirs. Muscat, EAGE workshop, 5p. 2013.Barton, N. Rock engineering challenges and some solutions for hydropower projects. INDOROCK-2013, keynote, Waknaghat. 2013.Barton, N. Rock mass characterization and use of empiricism to supplement modeling. Abstract, Sinorock 3, Shanghai. 2013.Barton, N. Shear strength criteria for rock, rock joints, rockfill and rock masses - Problems and some solutions. JRMGE, 5(2013). 2013.Barton, N. Tunnelling techniques opinions, for 25th anniversary of WORLD TUNNELLING. 2013.Barton, N. Integrated empirical methods based on Q-system. Mexico City. 2013.Barton. TBM prognoses, open-gripper, double-shield. Bergmek. Oslo.