+33 (0)4 93 29 11 29 siege@audemard.com
Collery Depot

Z.I. de Collery Ouest – Lot Marengo
Tel : (+33) 594 38 81 44
Fax : (+33) 594 38 81 43


The Guyanese Aggregate Company is specialized in the sale of aggregates intended for the performance of civil engineering, public works and building projects. Located on a major granite deposit between the cities of Cayenne and Kourou, the quarry, which dates to the 1980s, has a production capacity of 250,000 tons of aggregates and 50,000 tons of laterite. The main part of its production is intended for the Groups concrete plants as well as local public works contractors.
This system is supplemented by two mobile facilities with a unit capacity of 200 tons/hour each.


Concrete aggregates
Road materials
Filling materials
Drainage materials



  • Fleet of 15 mixer trucks
  • Covered zone from Irracoubo to Régina
  • Cayenne Hospital rock excavation
  • Pas de Tir Soyouz crushing facility
  • Hydroelectric mining factory of Mana
  • RN1 Irracoubo roadway (DDE client)
  • Cogneau-Lamirande roadways, RN1 Macouria shoulders, Remire-Montjoly beach rockfills

Monday to Thursday: 7:00 a.m. to 3:00 p.m.
Friday: 7:00 a.m. to 2:00 p.m.


Monday to Friday
7:00 a.m. to 4:00 p.m.



    Four generations of men and women have succeeded each other at Audemard, always with the same entrepreneurial passion.

    No matter what your construction project involves, call on SGDG and its quarry in French Guiana

    The Guianese Aggregate Company is a member of the AUDEMARD Group and is based in Cayenne. Its mission is to produce and sell high-quality aggregate products in French Guiana, as well as sand, highway materials, rubble, drainage, blocks, and laterite. Would you like to learn more about the company’s aggregates, which are made from a mixture of sand and gravel? With a history that goes back to the 1980s, SGDG’s quarry has an annual production capacity of 250,000 tons of aggregates for use in the local construction sector and at AUDEMARD’s concrete plants. How are aggregates produced at our quarry in French Guiana? The first step is extraction, which involves the use of heavy earth-moving equipment. This is followed by mining, which detaches and breaks up the materials from the solid rock. This second step involves three distinct stages at our Guianese quarry: drilling (making the holes into which the explosives will be placed), rigging (preparing explosives to achieve the desired mining outcome) and blasting (triggering the explosives by following a precise plan). Each of these stages, when performed as part of our quarrying operations in French Guiana, is of course performed with the utmost respect for the environment. In fact, AUDEMARD is proud of its investments in sustainable development. With regard to its production of aggregates in French Guiana, AUDEMARD and its subsidiary have deployed a number of actions to protect the surrounding environment. For example, blasting at the aggregate quarry in French Guiana is performed in such a way as to minimize its environmental impact (shocks, vibration, and noise), while this impact is measured using seismographic recorders. Moreover, AUDEMARD and its subsidiaries deploy environmental solutions with three key approaches: site reclamation, operation of landfill sites with inert materials, and recycling industrial waste from the construction sector.