This report describes a 2019 expert workshop including representatives from the machining industry and lubricant manufacturers to elicit views on the use of compressed air guns and barriers to adopting alternative cleaning methods. The workshop participants had 4 key conclusions; (1) Industry was familiar with the risks of injuries from equipment and noise- induced hearing loss, but was less familiar with the risks of lung and skin diseases. (2) Experienced machinists regarded compressed airguns as the most effective tool to clean and prevent damage to the machined component. (3) New airgun designs reduced aerosol formation, droplets splashed back onto the operator, and noise. However, their higher cost may be a barrier to wider adoption. (4) Industry needed to share more evidence about alternative cleaning methods.