Company: CENX
Filing Date: 2025-03-03
Form Type: 10-K
Source: 0000949157-25-000024
Chunk: 62

Company: CENTURY ALUMINUM CO
Filing Date: 2025-03-03
Form: 10-K
Item: Item 2
Chunk 62
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’s mining and refinery operations may be reached by a toll road from the center of Kingston, approximately a one hour drive west of Kingston, the administrative capital and main business center of the island. Jamaica has multiple daily air and sea connections to the United States, Canada, and United Kingdom.

The bauxite deposits are distributed throughout the region in communities of local residents, served by an extensive road system and infrastructure providing services to these communities.

The deposits are connected to the central stockpile at St Jago by internal private haul roads. Access to the deposits is also available through public roads, but these roads are generally not used for transporting bauxite. Jamalco haul roads occasionally cross public roads. The crossings are controlled by contractors directly employed by Jamalco.

Many deposits occur on the higher Manchester plateau which is connected to the stockpile at St Jago via an aerial ropeway cable conveyor over the face of a steep, rugged limestone escarpment. The conveyor is 3.4 km in length with a capacity up to 1,000 tonnes of bauxite per hour from the load station at Mount Oliphant, at an elevation 1750 ft or 533m, to the rail head at St Jago, elevation 150 ft or 46 m.

From St Jago, the bauxite is transported to the alumina refinery by a dedicated 18.0 km rail system, controlled and operated by Jamalco 24 hours per day, 6 days per week and approximately 9 rail trips are made each day transporting bauxite. At the refinery the bauxite is processed through the Bayer Process resulting in red mud residue which is disposed of within the residue lakes near the refinery. Alumina is transported from the refinery by the rail line to the Rocky Point Port on the southern coast, again a distance of 18.0 km.

Approximately 900 employees work in the refinery and related facilities such as the laboratory and port. Jamalco has employed three mining contractors to carry out the following tasks: road development, pit preparation, mining and stockpiling, train loading and rehabilitation of mined pits. The combined workforce for operations and maintenance is 328 contractor employees.

Refer to the Jamalco TRS in Sections 14 and 15 for more information on infrastructure.

Property History and Condition

Studies and exploration for bauxite first began in Jamaica in 1944, with bauxite mining beginning in 1952. Alcoa was first granted mining concessions for the property in Clarendon, creating