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DRUMMOND MINE - IRELAND (2005 - 2007)
Design main access tunnel through very weak ground for new gypsum mine. Primary support was shotcrete but emplacement needed to take account of low strength material forming the roof.
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Entrance to mine
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Shotcrete lining
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HVL - SPAIN (1992 - 1994)
Design of rock support system comprising of rockbolts and sprayed concrete for insets in two deep shafts for a coal mining project. Installation of instrumentation and interpretation of results. Site implementation of support systems and re-design in difficult geological conditions. Examination of cracked concrete lining in a mine tunnel and prediction of failure mechanisms. Design of remedial measures and interpretation of monitoring results.
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PHALEN COLLIERY - CANADA (1992 - 1995)
Design of rockbolting system to allow the first use of this technique for primary support in Nova Scotia. Including liaison with Inspectorate and Management. Presentation of teach-ins to Management and Workforce. Instrumentation design and interpretation. On-going technical liaison for rockbolting and cable bolting applications. Design of shotcrete support for a deep (550m) large chamber to house a belt drive (Span = 11m).
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GALMOY MINE - EIRE (1995 - 1996)
Design of access declines and underground support systems for a new mine by the use of rock mass classification techniques and Norwegian Method of Tunnelling (NMT). This includes rockbolts and shotcrete. Design of portal works for main decline. Drainage aspects of portal. GDA were the principle designer for this project.
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Galmoy Access Decline 
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ROSSINGTON COLLIERY - UK (1994 - 2001)
Design of first retreat panel to be worked in the Barnsley Seam at Rossington. Also the first rockbolted retreat roadway in the Barnsley Seam. Subsidence prediction and design of shortwall faces to minimise subsidence risks. Assessment of risks associated with first longwall retreat panel. Evaluation of performance of pumped cribs compared to Link n Lock cribs. Preparation of Ground Assessment and Support Design documents for new retreat panel.
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TOWER COLLIERY - UK (1997 - 2007)
Strata control investigations to determine cause of heavy weighting on gate ends of face lines. Instrumentation of support systems. Re-design of gate ends and support systems. Geotechnical assessment of the mine to determine the suitability of rockbolting. Design of initial systems.
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CARBOSULCIS - SARDINIA (1998 - 2002)
Geotechnical assessment of the mine to determine the suitability of rockbolting. Design of initial systems. Establishment of training courses and trial section. Presentation of teach-ins to Management and Workforce. Instrumentation design and interpretation. Overall technical responsibility for underground rockbolting trial. On site supervision of transition to first rockbolted roadway. Establishment of instrumentation programme and training of local bolting engineer. Establishment of numerical model (FLAC) to simulate rockbolt performance in difficult and complex geotechnical environment. On-going technical liaison for rockbolting and cable bolting applications.
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Side support for bolted roadway
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UK COAL MINING - UK (1993 to present)
Geotechnical assessments prior to rockbolting at several mines in different seams. Trouble shooting of strata control problems. Evaluation of the effects of oil contamination on the roof strata in fully bolted roadways at Thoresby and Welbeck Collieries. Inter panel pillar design at several collieries. Numerical modelling using FLAC of the effects of different rockbolting patterns and the effects of increased stress on bolting patterns due to face retreat at several collieries. Evaluation of cable bolting systems in use at several mines.
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UK Coal Ltd bolted roadways
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TABAS COAL MINE PROJECT – IRAN (2001 to Present)
All geotechnical aspects of a new coal mine project, including mine layout design, including pillar design using latest technology; drift support design in a seismic area; design of major junctions; design of gate roadway support systems, including rockbolting and standing supports, i.e. steel arches and cribs. Presentation of training courses to management and workforce.
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