Cimpor Spain unit belies claims of environmental damage from alternative fuels.

Nitrous oxide emissions rules to cost companies significant sums for compliance.

Production line suspended due to environmental violation.

Kiln converted to use oil rather than gas.

Tires to be utilized as fuel by cement plants.

Debris management challenge in post-tsunami Japan.

Plant may have one of US’ highest mercury emission levels

Says introduction at Cosmos Cordoba unit will "prolong the life of the factory".

Company says it is committed to transparency on project at Olazagutía plant.

Company seeks to increase the amount of waste burned.