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The Mansourah-Massarah Gold Project is an open-pit mine located in the Central Arabian gold region of the Kingdom of Saudi Arabia, approximately 500 kilometers southeast of Riyadh. The project was initiated by Ma'aden Gold and Base Metals Company (MGBM), the largest mining company in Saudi Arabia, with an expected production of 250,000 ounces of gold annually over an estimated life of 12 years.


In August 2023, MGBM awarded the Procurement and Construction contract of the stage 02 project to Darkstone Arabia Ltd company and the Engineering assigned to ATC Williams to aid in designing the tailings and water management system.

ATC Williams is a leader in providing solutions for tailings, water, and waste, in its fourth decade of operations.

As part of the contract, Darkstone will perform several tasks:

- Construction of the waste management system includes floor and perimeter Embankment, piping, mechanical works, and HDPE geomembrane.

- Waste distribution system

- Water management system

- Conducting laboratory tests

- Carrying out various related activities.

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