The project is located in the Morococha district, Yauli province, Junín department.



Project description:

The world’s largest SAG and ball mills built to date were installed. The Concession area is located in a rugged area with altitudes that vary between 4,400 and 5,000 meters above sea level.

The Project’s concentrator plant, which is new, will process 110,000 tons of material per day for an expected period of 36 years, with a production of 1,838 tons per day of copper concentrate and 27.5 tons per day of molybdenum oxide. The great challenge was to carry out the work in the geographical conditions of the area and the main responsibility was in the assembly of the two ball mills (28 x 44 feet) and a SAG mill (40 x 26 feet) that to date were considered the largest in the world. All these works were delivered within the term established by our client.


Our services include:


  • Assembly of metal structures, mechanical equipment and pipes for the wet area of ​​the concentrator plant.
  • Assembly of two ball mills and a SAG mill, in addition to functional testing and pre-commissioning of all equipment.

General information

  • Client: Jacobs Engineering Group Inc. (Jacobs)
  • Location: Junin, Peru
  • Period: 2012 – 2103

Main data

  • Plant Capacity: 120,000 t/day
  • Structures Assembly: 5,000 t
  • SAG Mills: 1 of 40′
  • Ball Mills: 2 x 40′ x 26′
  • N° of MH: 5 MM


Important figures

World's Largest SAG Mill to Date (28 x 44 ft.)
2 Largest Ball Mills in the World to Date (40 x 26 ft. 28 MW)

Related projects