Nagra publishes detailed technical and scientific information in its NTB series. This section lists the NTBs associated with the GTS. The reports are available only in the language of the title and can be ordered from Nagra using the order form. Click here for a full list of all Nagra NTBs available to order from Nagra's website.

NTB 84-46
Wernli B.; Bajo C.; Bischoff K.; EIR, Würenlingen (1984): Bestimmung des Sorptionskoeffizienten von Uran (VI) an Grimsel- und Böttsteingranit. Nagra Technischer Bericht NTB 84-46. Nagra, Baden.

NTB 85-34 out of print
Nagra; BGR; GSF (1985): Felslabor Grimsel. Rahmenprogramm und Statusbericht. Nagra Technischer Bericht NTB 85-34. Nagra, Baden.

NTB 85-46
Nagra; BGR; GSF (1985): Grimsel Test Site. Overview and Test Programs. Nagra Technical Report NTB 85-46. Nagra, Baden.

NTB 85-47
Nagra; BGR; GSF (1985): Felslabor Grimsel. Uebersicht und Untersuchungsprogramme. Nagra Technischer Bericht NTB 85-47. Nagra, Baden.

NTB 87-08
W.R.Alexander, R.D.Scott, A.B.MacKenzie and I.G.McKinley (1990) Natural analogue studies in crystalline rock: the influence of water bearing fractures on radionuclide immobilisation in a crystalline rock repository. Nagra Technical Report Series NTB 87-08, Nagra, Wettingen.

NTB 87-13
Falk L.; Magnusson K.-Å; Olsson O.; Ammann M.; Keusen H.R.; Sattel G. (1987): Grimsel Test Site: Analysis of radar measurements performed at the Grimsel Rock Laboratory in October 1985. Nagra Technical Report NTB 87-13. Nagra, Baden.

NTB 87-14
Keusen H.R.; Ganguin J.; Schuler P.; Buletti M. (1989): Felslabor Grimsel Geologie. Nagra Technischer Bericht NTB 87-14. Nagra, Baden.

NTB 87-14E
Keusen H.R.; Ganguin J.; Schuler P.; Buletti M.; GEOTEST, Zollikofen, Bern (1989): Grimsel Test Site: Geology. Nagra Technical Report NTB 87-14. Nagra, Baden.

NTB 88-06
WBK; Westfälische Berggewerkschaftskasse (1988): Felslabor Grimsel: Seismische Durchschallungstomographie. Nagra Technischer Bericht NTB 88-06. Nagra, Baden.

NTB 88-23
Bradbury M.H., Dr. (ed.); PSI (1989): Grimsel Test Site: Laboratory investigations in support of the migration experiments. Nagra Technical Report NTB 88-23. Nagra, Baden.

NTB 88-31
Niva B.; Olsson O.; Blümling P. (1988): Grimsel Test Site: Radar Crosshole Tomography with Application to Migration of Saline Tracer through Fracture Zones. Nagra Technical Report NTB 88-31. Nagra, Baden.

NTB 88-37
Bräuer V.; Kilger B.; Pahl A.; Bundesanstalt für Geowissenschaften und Rohstoffe, Hannover, BRD (1988): Felslabor Grimsel: Ingenieurgeologische Untersuchungen zur Interpretation von Gebirgs-Spannungsmessungen und Durchströmungsversuchen. Nagra Technical Report NTB 88-37. Nagra, Baden.

NTB 88-37E
Bräuer V.; Kilger B.; Pahl A.; Federal Institute for Geosciences and Natural Resources, Hannover, BRD (1989): Grimsel Test Site: Engineering Geological Investigations for the Interpretation of Rock Stress Measurements and Fracture Flow Tests. Nagra Technical Report NTB 88-37E. Nagra, Baden.

NTB 88-39
Pahl A.; Heusermann St.; Bräuer V.; Glöggler W.; BGR (1989): Felslabor Grimsel: Gebirgsspannungsuntersuchungen. Nagra Technischer Bericht NTB 88-39. Nagra, Baden.

NTB 88-39E
Pahl A.; Heusermann St.; Bräuer V.; Glöggler W., Federal Institute for Geosciences and Natural Resources, Hannover (1989): Grimsel Test Site: Rock Stress Investigations. Nagra Technical Report NTB 88-39. Nagra, Baden.

NTB 88-40
Schneefuss J.; Gläss F.; Gommlich G.; Schmidt M.; GFS, München (1989): Felslabor Grimsel: Wärmetest - Abschlussbericht. Nagra Technischer Bericht NTB 88-40. Nagra, Baden.

NTB 88-40E
Schneefuss J.; Gläss F.; Gommlich G.; Schmidt M.; GSF-Research Centre for Environmental Sciences, Munich (1989): Grimsel Test Site: Heater Test - Final Report. Nagra Technical Report NTB 88-40E. Nagra, Baden.

NTB 89-01
Wyss E.; Solexperts AG, Schwerzenbach (1989): Felslabor Grimsel: Hydrogeologische Untersuchungen zur Bestimmung hydraulischer Potentiale. Nagra Technischer Bericht NTB 89-01. Nagra, Baden.

NTB 89-11
Flach D.; Noell U, Gesellschaft für Strahlen- und Umweltforschung mbH, München (GSF) (1989): Felslabor Grimsel: Neigungsmessungen zur Ermittlung neotektonischer Vorgänge. Nagra Technischer Bericht NTB 89-11. Nagra, Baden.

NTB 89-15
Hoehn E.; Fierz Th.; Thorne P.; PSI (1990): Grimsel Test Site: Hydrogeological characterisation of the migration experimental area at the Grimsel Test Site. Nagra Technical Report NTB 89-15. Nagra, Baden.

NTB 89-16
Herzog F.; PSI (1989): Grimsel Test Site - Hydrologic modelling of the migration site at the Grimsel Test Site - The Steady State. Nagra Technical Report NTB 89-16. Nagra, Baden.

NTB 90-01
Degueldre C. (et al.); PSI (1990): Grimsel Test Site: Grimsel Colloid Exercises: An international intercomparison exercise on the sampling and characterisation of groundwater colloids. Nagra Technical Report NTB 90-01. Nagra, Wettingen.

NTB 90-07 out of print
Blümling P.; Cosma C.; Korn M.; Gelbke C.; Cassell B. (1992): Grimsel Test Site: Geophysical methods for the detection of discontinuities ahead of a tunnel face. Nagra Technical Report NTB 90-07 . Nagra, Wettingen.

NTB 90-15
Baertschi P.; Alexander W.R.; Dollinger H. (1991): Grimsel Test Site: Uranium migration in crystalline rock: Capillary solution transport in the granite of the Grimsel Test Site, Switzerland. Nagra Technical Report NTB 90-15. Nagra, Wettingen.

NTB 90-39
Eikenberg J.; Baeyens B.; Bradbury M.H.; PSI (1991): Grimsel Test Site - The Grimsel Migration Experiment: A hydrogeochemical equilibrium test. Nagra Technical Report NTB 90-39. Nagra, Wettingen.

NTB 90-49
Majer E.L.; Myer L.R.; Peterson J.E.; Karasaki K.; Long J.C.S.; Martel S.J.; Blümling P.; Vomvoris S. (1990): Joint seismic, hydrogeological and geochemical investigations of a fracture zone in the Grimsel Rock Laboratory, Switzerland. Nagra Technical Report NTB 90-49. Nagra, Wettingen.

NTB 91-01
Pahl A.; Liedtke L.; Naujoks A.; Bräuer V.; Bundesanstalt für Geowissenschaften und Rohstoffe, Hannover (1992): Felslabor Grimsel: Bohrlochkranzversu Durchströmung von geklüftetem Fels. Nagra Technischer Bericht NTB 91-01. Nagra, Wettingen.

NTB 91-01E
Pahl A.; Liedtke L.; Naujoks A.; Bräuer V., Federal Institute for Geoscience and Natural Resources, Hannover (1992): Grimsel Test Site: Fracture System Flow Test. Nagra Technical Report NTB 91-01E. Nagra, Wettingen.

NTB 91-02
Kull H.; Brewitz W.; Klarr K.; GSF - Forschungszentrum für Umwelt und Gesundheit GmbH, München (1993): Felslabor Grimsel: Ventilationstest - In-situ-Verfahren zur Permeabilitätsbestimmung im Kristallin. Nagra Technischer Bericht NTB 91-02. Nagra, Wettingen.

NTB 91-02E
Kull H.; Brewitz W.; Klarr K. (1993): Ventilationtest : in-situ-experiment for determination of permeability in crystalline rock : Grimsel Test Site. Nagra Technical Report 91-02E. Nagra, Wettingen.

NTB 91-03 out of print
Voborny O.; Adank P.; Hürlimann W.; Vomvoris S.; Mishra S. (1991): Grimsel Test Site: Modeling of groundwater flow in the rock body surrounding the underground laboratory. Nagra Technical Report NTB 91-03. Nagra, Wettingen.

NTB 91-04 out of print
Frick U.; Alexander W.; Baeyens B.; Bossart P.; (et al.) (1992): Grimsel Test Site: The Radionuclide Migration Experiment: Overview of investigations 1985 - 1990. Nagra Technical Report NTB 91-04. Nagra, Wettingen.

NTB 91-06
Aksoyoglu S.; Bajo C.; Mantovani M., PSI (1991): Grimsel Test Site: Batch sorption experiments with iodine, bromine, strontium, sodium and cesium on Grimsel mylonite. Nagra Technical Report NTB 91-06. Nagra, Wettingen.

NTB 91-09 out of print
Vomvoris S.; Frieg B. (eds.); Guyonnet D.; Kelley V.; Lavanchy J.-M.; Löw S.; Mishra S. (1992): Grimsel Test Site: Interpretation of crosshole hydraulic tests and a pilot fluid logging test for selected boreholes within the BK-Site. Nagra Technical Report NTB 91-09. Nagra, Wettingen.

NTB 91-12
Bossart P.; Mazurek M. (1991): Grimsel Test Site: Structural geology and water flow-paths in the migration shear-zone. nagra Technical Report. Nagra, Wettingen.

NTB 91-31
Herzog F. (1991): GTS: A simple transport model for the Grimsel Migration Experiments. Nagra Technical Report NTB 91-31. Nagra, Wettingen.

NTB 91-33
Smith P.A. (1992): Grimsel Test Site: Migration experiment: Modelling of aboratory high-pressure infiltration experiments. Nagra Technical Report NTB 91-33. Nagra, Wettingen.

NTB 91-34 out of print
Vomvoris S.; Frieg B. (eds.); Bossart P.; Gmünder C.; Heiniger P.; Jaquet O.; Watanabe P. (1992): Grimsel Test Site: Overview of Nagra field and modeling activities in the Ventilation Drift (1988-1990). Nagra Technical Report NTB 91-34. Nagra, Wettingen.

NTB 93-10 out of print
Frieg B.; Vomvoris S. (editors) (1994): Investigation of hydraulic parameters in the saturated and unsaturated zone of ventilation drift : Grimsel Test Site. Nagra Technical Report NTB 93-10. Nagra, Wettingen.

NTB 93-20
Finsterle S.; Versuchsanstalt für Wasserbau, Hydrologie und Glaziologie, ETH Zürich (1993): Inverse Modellierung zur Bestimmung hydrogeologischer Parameter eines Zweiphasensystems. Nagra Technischer Bericht NTB 93-20. Nagra, Wettingen.

NTB 93-47
Marschall P.; Vomvoris S. (editors) (1995): Developments in hydrotesting, fluid logging and combined salt/heat tracer experiments in the BK site (Phase 3) : Grimsel Test Site. Nagra Technical Report NTB 93-47. Nagra, Wettingen.

NTB 94-02
Liedtke L.; Götschenberg A.; Jobmann M. (et al.) (1994): Bohrlochkranzversuch : experimentelle und numerische Untersuchungen zum Stofftransport in geklüftetem Fels : Felslabor Grimsel. Nagra Technischer Bericht NTB 94-02. Nagra, Wettingen.

NTB 94-02E
Liedtke L.; Götschenberg A.; Jobmann M. (et al.) (1994): Fracture System Flow Test : experimental and numerical investigations of mass transport in fractured rock : Grimsel Test Site. Nagra Technical Report NTB 94-02E. Nagra, Wettingen.

NTB 94-04
Kull H.; Miehe R. (1995): Der Einfluss der Stollen-Ventilation auf die hydraulischen Fliessverhältnisse im ausbruchsnahen Gebirgsbereich (Kristallin) : Felslabor Grimsel. Nagra Technischer Bericht NTB 94-04. Nagra, Wettingen.

NTB 94-04E
Kull H.; Miehe R. (1995): The influence of tunnel ventilation on the hydraulic flow conditions in the crystalline rock zone in the tunnel near-field : Grimsel Test Site. Nagra Technical Report NTB 94-04E. Nagra, Wettingen.

NTB 94-07
Correa N.R. (editor); Rivera A.; Kuhlmann U. (et al.) (1994): Modeling of groundwater flow at the subregional scale : boundary conditions, transient and thermal effects, inverse modeling : Grimsel Test Site. Nagra Technical Report NTB 94-07. Nagra, Wettingen.

NTB 94-18
Heer W.; Hadermann J., PSI, Würenlingen and Villigen (1996): Modelling radionuclide migration field experiments : Grimsel Test Site. Nagra Technical Report NTB 94-18. Nagra, Wettingen.

NTB 97-05
Albert W.; Bühnemann J.; Holliger K.; Maurer H.R.; Pratt G.; Stekl I. (1999): Grimsel Test Site: Further development of seismic tomography. Nagra Technical Report NTB 97-05. Nagra, Wettingen.

NTB 99-07
Marschall P.; Fein E.; Kull H.; Lanyon W.; Liedtke L.; Müller-Lyda I.; Shao H. (1999): Grimsel Test Site Investigation Phase V (1997-2002): Conclusions of the Tunnel Near-Field Programme (CTN). Nagra Technical Report NTB 99-07. Nagra, Wettingen.

NTB 00-06
Alexander W. R.; Ota K.; Frieg B. (2003): Grimsel Test Site Investigation Phase IV (1994-1996): The Nagra-JNC in situ study of safety relevant radionuclide retardation in fractured crystalline rock II : The RRP project methodology, development, field and laboratory tests. Nagra Technical Report NTB 00-06. Nagra, Wettingen

NTB 00-08
Moeri A.; Mazurek M.; Adler M.; Schild, Siegesmund S.; Vollbrecht A.; Ota K.; Ando T.; Alexander W.R.; Smith P.A.; Haag P.; Buehler Ch. (2003): Grimsel Test Site Investigation Phase IV (1994-1996): The Nagra-JNC in situ study of safety relevant radionuclide retardation in fractured crystalline rock IV : The insitu study of matrix porosity in the vicinity of a water conducting fracture.. Nagra Technical Report NTB 00-08. Nagra, Wettingen

NTB 00-09 CD only
Smith P.A.; Alexander W.R.; Heer W.; Fierz T.; Meier P.M.; Baeyens B.; Bradbury M.H.; Mazurek M.; McKinley I.G. (2001): Grimsel Test Site Investigation Phase IV (1994-1996): The Nagra-JNC in situ study of safety relevant radionuclide retardation in fractured crystalline rock I: Radionuclide migration experiment - Overview 1990-1996. Nagra Technical Report NTB 00-09. Nagra, Wettingen.

NTB 03-01
Grimsel Test Site - Investigation Phase V "The CRR final project report series I: Description of the Field Phase - Methodologies and Raw data" A. Möri, editor (December 2004)

NTB 03-13
Grimsel Test Site - Investigation Phase V "Effective Field parameter EFP" Th. Himmelsbach, H. Shao, K. Wieczorek, D. Flach, K. Schuster, H.-J. Alheid, T.-S. Liou, J. Bartlakowski, T. Krekeler (December 2003),

NTB 04-01
Grimsel Test Site - Investigation Phase V "Modelling the Transport of Solutes and Colloids in a Water-Conducting Shear Zone in the Grimsel Test Site" G. Kosakowski and P. Smith (December 2004),