Dolores is an open pit gold and silver mine in the mountainous area of ​​the Sierra Madre, in the state of Chihuahua in Mexico.

Anddes contributes to the success of the Dolores project, through:

• Inspection visit to the mine’s leaching facilities and recommendations for construction and operation.
• Design of the expansion of Leaching Pad 2, in the area between Pad 1 and 2.
• Construction quality assurance of the leach pad expansion 2.
• Detailed engineering of the additional expansion of the leach pad 2.
• Verification of the global stability conditions of Pad 2, due to the difference between the recommended design and the mineral stacking carried out.
• 3D stability analysis to verify pad stability due to stacking design modifications.