Abstract: A laser machining apparatus arranged to machine material which emits a hazardous material during machining, includes a vacuum extraction system 24, 25 for extracting at least some of the emitted hazardous material from a machining region of the apparatus. At least a first containment zone 36 encompasses the machining region to contain deposition of any un-extracted emitted hazardous material to the machining region. A second containment zone 37 may surround the first containment zone and a pressure differential may be provided between the two containment zones to assist in containing deposition of hazardous materials to the first containment zone 36. A transfer chamber 40 may be provided for transferring machined material to a washing station to prevent release from the laser machining apparatus during the transfer of any emitted hazardous material deposited on the machined material.