Emergency services rushed to Castlefield Industrial Estate, Bingley, following reports two men had been seriously injured at around 3.30pm on Thursday, October 29.
Daron Pickstock, 43, from Chorley, was pronounced dead at the scene.
A second man, Lee Horton, 58, from Ilkley, was taken to hospital for urgent medical treatment but died in hospital the following day (October 30).
One man who was arrested in connection with the incident has been released under investigation.
A West Yorkshire Police spokesperson said: "Investigations with the Health and Safety Executive continue into the circumstances of the incident."
An inquest into the deaths was opened and adjourned today in Bradford.
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