1

ORTLEPP WD (1960). An approximate determination of the shear strength of some Witwatersrand quartzites. Jour. SAIMM. Johannesburg, Oct 1960.

2

ORTLEPP WD and COOK NGW (1964). The measurement and analyses of the deformation around deep, hard-rock excavations. Proc. 1964 Int. Conference on Strata Control and Rock Mechanics. New York, May 1964.

3

SALAMON MDG, RYDER JA and ORTLEPP WD (1964). An analogue solution for determining the elastic response of strata surrounding tabular mining excavations. Jour. SAIMM. Johannesburg, September 1964.

4

ORTLEPP WD and NICOLL A (1964). The elastic analysis of observed strata movement by means of an electrical analogue. Jour. SAIMM. Johannesburg, November 1964.

5

COOK NGW, HOEK E, PRETORIUS JPG, ORTLEPP WD and SALAMON MDG (1966). Rock Mechanics applied to the study of rockbursts. Jour. SAIMM. Johannesburg. May 1966.

6

ORTLEPP WD (1968). The effect of stoping on the stability of a remote, pre-existing tunnel. Proc. of Fourth Canadian Rock Mechanics Symposium, Ottawa, March 1967.

7

PLEWMAN RP, DEIST FH and ORTLEPP WD (1969). Development and application of a digital computer method for the solution of strata control problems. Jour. SAlMM vol.70 no.2, Sept 1969, p.33-44.

8

ORTLEPP WD (1969). An empirical determination of the effectiveness of rockbolt support under impulse loading. Proc. Int Symposium on Large Permanent Underground Openings. Ed TL Brekke and FA Jorstadt, Oslo, 1970, p.197-205. This proceeding is out of print but is available at the following libraries:

University of Johannesburg – Aucklandpark Campus

University of Witwatersrand – Waternweiler Library

9

ORTLEPP WD, MORE-O'FERRALL RC and WILSON JW (1972). Support methods in tunnels. Assoc. Mine Managers S. Afr. 1972-1973, p.167-198.

10

ORTLEPP WD and STEELE KE (1973). Rockbursts: The nature of the problem and management counter-measures on ERPM Ltd. Assoc. Mine Managers S. Afr. 1972-1973, p. 225-278

11

ORTLEPP WD (1974). Failure of the concrete lining in an inclined shaft at great depth .3^rd Congress of ISRM. Advances in Rock Mechanics, Denver, USA, 1974.

12

ORTLEPP WD (1976). Instrumentation of underground mining structures. Proc. of Symp. Exploration for Rock Engineering. SA Institute of Civil Engineering - Geotech Div. Marshalltown, 1976 vol. 1, p.255-262.

13

SMITH D and ORTLEPP WD (1976). How the problems associated with strike gullies with negative lead were overcome at East Rand Proprietary Mines Ltd. Assoc. Mine Managers of S. Afr. Papers and Discussions, 1976-1977.

14

ORTLEPP WD (1978). The mechanism of a rockburst. Proc. 19^th US Rock Mechanics Symposium Stateline, Nevada May 1978.

http://www.sciencedirect.com

15

ORTLEPP WD (1978). Basic engineering principles in the design of sandwich-pack support. Jour. SAIMM vol. 78 no.11 , June 1978.

16

GAY NC and ORTLEPP WD (1979). Anatomy of a mining-induced fault zone. Geol. Soc. AM. Bull.90 p.47-58.

http://www.sciencedirect.com

17

ORTLEPP WD (1980). The problem of rockbursts in South African gold mines. In Mining of Copper Porphyries. Proc. vol3. Inst. De Ingenerios de Minas de Chile, Santiago de Chile, November 1980.

18

GAY NC, ORTLEPP WD, RYDER JA, STEFFEN OKH, WAGNER H (1982). The development of rock mechanics in the South African mineral industry. Proc.12^th Congress of the Councilof Mining and Metallurgical Institutions. SAIMM, Marshalltown, S. Africa 1982, p.365-376.

19

ORTLEPP WD and SPOTTISWOODE SM (1982). The design and introduction of stabilizing pillars on Blyvooruitzicht G.M. Ltd. 12^th Congress of CMMI, Johannesburg

20

ORTLEPP WD (1983). Considerations for the design of support for deep hardrock tunnels . Proc. 5^th Int. Congress of Int. Soc. for Rock Mechanics. Melbourne, Australia 1983. pp D179-187.

21

ORTLEPP WD (1984). Rockbursts in SA gold mines: a phenomenological view. 1^st lnt. Symp. Rockbursts and Seismicity in Mines. SAIMM Symposium Series 56 Johannesburg, 1984.

http://www.sciencedirect.com

22

ORTLEPP WD (1984). Performance of an experimental tunnel subject to stresses ranging from 50 MPa to 230 MPa. ISRM Symposium. Design and Performance of Underground Excavations. Cambridge, England. September 1984.

23

ORTLEPP WD and HAGAN TO (1986). Rockbursts: understanding and control - past, present and future. 13^th Congress of Council of Mining and Met. lnstitutes,vol3. Australasian lMM, Singapore, May 1986.

24

ORTLEPP WD and MOORE MA (1987). Underground observation of high propagation rate extension fractures. 6^th Congress of ISRM. Montreal 1987. AA Balkema, Rotterdam pp 1173-1180

25

GAY NC, MADDEN B, ORTLEPP WD, STEFFEN OKH, DE WIT MJ (1987). Practice of rock mechanics in South Africa. Proc. 5^th ISRM Congress. Montreal 1987, p.901-908.

26

DURRHEIM RJ, ROBERTS MKC, HAILE AT, HAGAN TO, JAGER AJ, HANDLEY MF, SPOTTISWOODE SM, ORTLEPP WD (1989). Factors influencing the severity of rockburst damage in South African gold mines. Jour. SAlMM vol.98 no.2, Sept 1989, p.53-57.

27

ORTLEPP WD and BRISTOW BM (1990). Hydro-fracturing and fluid injection data from simple tests in three different mining environments. ISRM Int. Symp. Static and Dynamic Considerations in Rock Engineering. Ed R Brummer. Swaziland, 1990.

28

ORTLEPP WD (1992). The design of support for the containment of rockburst damage in tunnels – an engineering approach. Proc. Int. Symp. on Rock Support. Laurentian Universtiy. Sudbury, Ontario (invited paper) Available in: Ground support in Mining and Underground Construction, Villaescusa E, Potvin Y, 2004, Taylor & Francis.

http://www.taylorandfrancis.com

29

ORTLEPP WD (1992). lmpulsive-load testing of tunnel support. Proc. Int. Symp. on Rock Support. Laurentian University. Sudbury, Ontario.

30

ORTLEPP WD (1992). Note on fault-slip motion inferred from a study of micro-cataclastic particles from an underground shear rupture. PAGEOPH, Vol 139, No 314. 1992 pp 677-695

31

ORTLEPP WD and STACEY TR (1992). Rockburst mechanism in tunnels and shafts. Tuncon '92 Design and Construction of Tunnels. Maseru, Lesotho, September 1992.

http://www.sciencedirect.com

32

ORTLEPP WD (1993). High ground displacement velocities associated with rockburst damage. 3^rd Int. Symp. on Rockbursts and Seismicity in Mines. Ed. RP Young, Kingston, Ontario

http://www.taylorandfrancis.com

33

STACEY TR and ORTLEPP WD (1993). Rockburst mechanisms and tunnel support in rockburst conditions. Proc. Int. Conference Geomechanics '93. Ostrava, Czech Republic, September 1993. AA Balkema, Rotterdam 1994.

http://www.taylorandfrancis.com

34

ORTLEPP WD (1993). A philosophical consideration of support requirements in civil and mining tunnels. Tuncon '93 Aspects of control in Tunnelling Projects, S. Afr. National Council on Tunnelling. Johannesburg. November 1993 p.49-54.

35

ORTLEPP WD and STACEY TR (1994). Rockburst mechanisms in tunnels and shafts. Tunnelling and Underground Space Technol. Vol. 9 no. 1, January 1994.

http://www.taylorandfrancis.com

36

ORTLEPP WD (1994). Grouted rock-studs as rockburst support - a simple design approach and an effective test procedure. Jour SAIMM. vol. 94, no. 2, Feb 1994.

37

ORTLEPP WD and STACEY TR (1994). The need for yielding support in rockburst conditions and realistic testing. Proc. Int Workshop on Applied Rockburst Research. Santiago, Chile, May 1994.

38

STACEY TR, ORTLEPP WD and KIRSTEN HAD (1995). Energy-absorbing capacity of reinforced shotcrete with reference to the containment of rockburst damage. Jour. SAIMM vol. 95 no. 3, May/June 1995.

39

STACEY TR and ORTLEPP WD (1995). Technical note: Safety and cost implications in the spacing of support. Jour SAIMM Vol 95 No. 3 May/June 1995.

40

ORTLEPP WD and STACEY TR (1996). The performance of containment rock support such as wire mesh under simulated rockburst loading. Proc. Geomechanics 1996 AA Balkema p. 81-87.

http://searchbarnesandnoble.com

41

ORTLEPP WD and STACEY TR (1996). Dynamic testing of Tunnel Support Simrac Symposium, SAIMM, Randburg, September 1996.

42

ORTLEPP WD and STACEY TR (1997). Towards total safety in tunnels subject to rockbursts through containment of energy. Proc. 27^th Int. Conference of Safety in Mines Research Institutes. Eds. Dhar BB, Bhowmick BC. New Delhi, February 1997.

43

ORTLEPP WD (1997). Reinforced shotcrete support of tunnels under rockburst conditions - will it work? 1^st Southern African Rock Engineering Symposium Proceedings. Johannesburg, Sept 1997, p.267.

44

ORTLEPP WD and STACEY TR (1998). Performance of tunnel support under large deformation static and dynamic loading. Tunnelling and Underground Space Technol. Vol. 13, no. 1, March 1998.

http://www.sciencedirect.com

45

ORTLEPP WD, STACEY TR and KIRSTEN HAD (1999). Containment support for large static and dynamic deformations in mines. Proc. of Int. Symposium on Ground Support: Kalgoorlie, W. Australia. March 1999 Balkema, Rotterdam p.359-364.

46

STACEY TR and ORTLEPP WD (1999). Retainment support for dynamic events in mines. Proc. of Int. Symposium on Ground Support. Kalgoorlie, West Australia. March 1999. Balkema, Rotterdam p.329-333.

http://www.amazon.co.uk/

47

ORTLEPP WD - (1999). Reinforced shotcrete support of tunnels under rockburst conditions - will it work? Sares 99. 2^nd Southern African Rock Engineering Symposium, Johannesburg. Sept. 1999.

48

ORTLEPP WD (2000). Observation of mining-induced faults in an intact rock mass at depth. Int. Jour. of Rock Mech and Min. Sci '37. 2000 p.423-436.

http://www.sciencedirect.com/

49

STACEY TR and ORTLEPP WD (2000). Support appropriate for dynamic loading and large static loading in block cave mining operations. Proc. of MassMin 2000. Australasian Inst. of Mining and Metallurgy no. 7/2000. Brisbane, Queensland. November 2000.

Contact the AUSIMM for a copy of these proceedings. Tel (03) 9662 3166 Fax (03) 9662 3662

50

REIMOLD U, STEWART R and ORTLEPP WD (2001). The nature of a deformation zone and fault rock related to a recent rockburst at Western Deep Levels Gold Mine, Witwatersrand Basin, South Africa Tectonophysics 337 (2001) p.173-190.

http://www.sciencedirect.com

51

BORNMAN JJ, ORTLEPP WD and STACEY TR (2001). The impact of Durabar^TM yieldable tendons on the safety and cost implications of support spacing. Roof bolting in mining. Proc. 4^th lnt. Symp. Aachen, Germany. June 2001.

52

ORTLEPP WD (2001). The behaviour of tunnels at great depth under large static and dynamic pressures. Tunnelling and Underground Space Technology 16 (2001) p. a1-48. Elsevier Science Ltd.

http://www.sciencedirect.com

53

STACEY TR and ORTLEPP WD (2001). Large-scale impact-load testing of rock and stope support. 4th Asia-Pacific Conference on Shock and lmpact loads on Structures. Singapore, November 2001.

54

ORTLEPP WD (2001). Thoughts on the rockburst source mechanism based on observations of the mine induced shear rupture. 5^th lnt. Symp on Rockburst and Seismicity in Mines. SAIMM Symposium Series S27. September 2001 p.43-51.

55

ORTLEPP WD (2001). The mechanism of rock outburst in a quartzite tunnel in a deep gold mine. 5^th Int Symp. on Rockburst and Seismicity in Mines. SAIMM Symposium Series S27. September 2001, p.53-57.

56

ORTLEPP WD, WESSELOO J and STACEY TR (2001). A facility for testing stope support under realistic 'rockburst' conditions. 5^th Int. Symp. on Rockburst and Seismicity in Mines. SAIMM Symposium Series S27, September 2001, p.197 -204.

57

ORTLEPP WD, BORNMAN JJ and ERASMUS PN (2001). The Durabar – a yieldable support tendon - design rationale and laboratory results. 5^th lnt. Symp. on Rockburst and Seismicity in Mines. SAIMM Symposium Series S27, September 2001.

58

STACEY TR and ORTLEPP WD (2001). The capacities of various types of wire mesh under dynamic loading. 1^st lnt. Seminar on Surface Support Liners. Perth, August 2001.

59

STACEY TR and ORTLEPP WD (2001). Tunnel surface support – capacities of various types of wire mesh and shotcrete under dynamic loading. Jour. SAIMM vol. 101, October 2001.

60

STACEY TR, ORTLEPP WD and WESSELOO J (2002) “Rockburst” testing of stope support using a large scale physical model. Physical Modelling in Geotechnics: ICPMG '02, Phillips, Guo & Popescu (eds.), p.821-826.

61

SIMSER B, JOUGHIN WC and ORTLEPP WD (2002). The performance of Brunswick mine's rockburst support system during a severe seismic episode. Jour. SAIMM, vol 102, no.4 May-June 2002, p.217-223.

62

ORTLEPP WD and ERASMUS PN (2002). The performance of yielding straps under dynamic loading. 2nd lnt. Seminar on Surface Support Liners. SAIMM. Sandton, July 2002.

63

STACEY TR, ORTLEPP WD and HUMAN JL (2003). Testing to evaluate the containment of major impact damage in underground mine workings. 5^th Asia-Pacific Conference on Shock and lmpact Loads on Structures. Changsha, Hunan, China, 2003.

64

STACEY TR and ORTLEPP WD (2004). Assessment of the risk of plug or water barrier failure due to seismicity at South Deep mine. 2^nd Int. Seminar on Deep and High Stress Mining. SAIMM Symp. Series S37, February 2004.

65

ORTLEPP WD, MURPHY S and VAN ASWEGEN G (2004). The mechanism of a rockburst - an informative case study. 2^nd lnt. Seminar on Deep and High Stress Mining. SAIMM Symposium Series 537, February 2004 p.23-40.

66

HUMAN JL and ORTLEPP WD (2004). Large scale testing of stope support systems under 'realisitc' rockburst conditions. 2no Int. Seminar on Deep and High Stress Mining. SAIMM Symp. Series S37, February 2004 p.107 - 121.

67

ORTLEPP WD (2005). RaSiM comes of age: a review of the contribution to the understanding and control of mine rockbursts. 6^th Int. Symp. on Rockburst and Seismicity in Mines. Perth, Australia, March 2005. This paper can be downloaded free of charge at:

http://www.acg.uwa.edu.au/publications/details/underground_mining/rasim6_proceedings

68

ORTLEPP WD, ARMSTRONG R, RYDER JA and O'CONNOR D (2005). Fundamental study of microfracturing on slip surface of mine-induced dynamic brittle shear zones. 6^th Int. Symp. on Rockburst and Seismicity in Mines. Perth, Australia, March 2005. This paper can be downloaded free of charge at:

http://www.acg.uwa.edu.au/publications/details/underground_mining/rasim6_proceedings

69

ORTLEPP WD, HUMAN L, ERASMUS PN and DAWE S (2005). Static and dynamic load-displacement characteristics of a yielding cable - anchor-determined in a novel testing device. 6^th lnt. Symp. on Rockburst and Seismicity in Mines. Perth, Australia, March 2005. This paper can be downloaded free of charge at:

http://www.acg.uwa.edu.au/publications/details/underground_mining/rasim6_proceedings

70

ORTLEPP WD and ERASMUS PN (2005). Dynamic Testing of a yielding cable anchor. SARES 2005. 3^rd Southern African Rock Engineering Symposium. SAIMM, October 2005.

71

ORTLEPP WD and ERASMUS PN (2005). 6^th Asia-Pacific Int. Conf. on Shock and Impact loads on Structures. Perth, Australia 2005

72

DURHEIM RJ, ANDERSON RL, CICHOWICZ R, EBRAHIM-TROLLOPE R, HUBERT G, KIJKO A, McGARR A, ORTLEPP WD, van der MERWE N (2006) The Risks to Miners, Mines and the Public posed by Large Seismic Events in the Gold Mining Districts of South Africa. 3rd Int. Semina

73

ORTLEPP WD (2007). Dynamic capacity in cable anchors and rockbolts. 1^st Symp. on Block and Sub-Level Caving, October 2007, Cape Town, South Africa