Stracon GyM has secured a contract extension from Minera La Zanja to provide mining services for an additional 12 months.
Signed for $30m in 2010, the contract has now been extended to 31 December next year.
La Zanja is an open pit gold and silver mine located between 3,200m and 3,600m above sea level in Cajamarca, Pulan, Peru.
Stracon GyM CEO Steve Dixon said: "Quality of service, productivity and focus on safety are the main characteristics of Stracon GyM that motivate the confidence of our customers. This is reflected in the renewal of contracts, as in this case."
An affiliate of engineering and construction company Graña y Montero, Stracon has been engaged in developing the construction and operation service, comprising the movement of around 68Mt of ore and debris since April 2010.
The scope of works undertaken by the company under the contract includes earthworks, civil works for mine construction and mining operation.
Construction at the mine started in 2009, while operations to annually treat 100,000oz of gold began in 2010.
Minera La Zanja SRL is a subsidiary of Buenaventura, a company that owns mining rights in Peru.
Buenaventura is engaged in exploration and exploitation activities at two underground gold mines, as well as owns a 43.65% interest in the Yanacocha gold mine.