The sale of CZN by ExxonMobil was part of an ongoing effort by the company to sell noncore mining assets.
The CZN mine is an open-cut operation, currently producing about 19M-mt/yr high-quality steaming coal for export.
As part of its preparations for the development of commercial mining operations, in 1999 CdelC concluded a series of agreements with the adjacent Cerrejon Zona Norte project (CZN
), through which CdelC has access to the rail transportation and port infrastructure of CZN
in order to export its production.