The ongoing optimisation of our fleet and machine equipment also included the installation of soot particulate filters in our locomotives, which has allowed us to reduce the emissions from transport trips. These particulate filters are part of the exhaust after-treatment systems that help improve air quality and reduce the impact that diesel combustion engines have on the environment. We also always aim to use the smallest and most economical machines possible in order to keep emissions and consumption low while minimising any harm to the environment.