network rail careerstrainee train driver jobsnorthern rail jobstranslink jobseast midlands railway jobsA Controller of Site safety or COSS is someone certified because of the Network Rail to make sure safe apply for operate taking place on or in close proximity to railway tracks and infrastructure. Their Most important job is to set up a secure pro

network rail careerstrainee train driver jobsnorthern rail jobstranslink jobseast midlands railway jobsA Controller of Site safety or COSS is a person skilled from the Network Rail to ensure safe apply for operate happening on or around railway tracks and infrastructure. Their Key purpose should be to set up a secure process of work to safeguard st