17 Alamos Gold Inc Project: Mulatos Mine, Sonora Mexico. Scope: Design level pit slope evaluations for four open pits at Mulatos. Outcome: SRK conducted a probability-based evaluation that allowed pit slopes to be modelled using probability distribution functions of rock strength test results. This Monte Carlo analysis approach prevented overly conservative pit slope angle recommendations by avoiding using simple average, or low- end, rock strength values. The Estrella pit is currently being excavated, and performance indicates that the pit slope angle was effectively maximised. De Beer s Canada Project: Victor Mine, Ontario, Canada. Scope: Geotechnical, structural and hydrogeological investigation and open pit slope design and technical assistance to the mine. Outcome: SRK was part of a multidisciplinary technical team which assisted De Beers Canada to formulate and develop a mining approach from the advanced exploration stage to feasibility study for the first diamond mine in Eastern Canada. SRK’ s specific responsibility covered geotechnical investigation of soils and rocks and ongoing geotechnical support to the mining operation to assist De Beers achieve its goal of a safe and profitable operation in James Bay Lowlands. Compania Minera Antamina S.A. Project: Antamina Mine, Ancash, Peru. Scope: Conducted structural review of the polymetallic skarn deposit to defne key structures that may infuence rock stability . Included detailed feld mapping within the open pit, review of exploration and production drillcore, 3D modelling, and structural geology training for Antamina staff. Outcome: Identifcation of 59 fault structures forming seven different fault generations with associated kinematics and cross-cutting relationships. Created the mine’ s frst structural 3D model, which was integrated with ongoing slope stability engineering and used to form a structural framework for prospective exploration areas. Hindustan Zinc Limited Project: Rajpura Dariba lead - zinc Mine, India. Scope: Underground rock mechanics studies and numerical modelling for development of mining method and sequencing for stoping in an area which was prone to premature hangingwall collapse due to the presence of a shear zone. Outcome: SRK identified longitudinal sub-level open stoping with cemented backfill for the poor ground areas. Stable stope dimensions, stope support, backfill requirements and a sequence of mining that minimised exposure of the poor rock hangingwall shear was developed. The recommended mining method was trialled with good stability results and reasonable productivity . W ell engineered slopes: Essential in major open pits