Safety Check of machine: Need help!

Hi Guys,
New to this forum and posting this here as I think I would get some helpful information.
I am working as a supervisor in an aluminum factory in Ontario. We have bought an aluminum extrusion machine recently. And haven't operated it yet. It is my duty to ensure that every machines or equipment are safe to work with. A safety check has to be done before operating it from producing aluminum, handling foundry that melts the material, or handling molten material. As I am the new supervisor of this factory, I have to find a qualified safety engineer. When I searched online, I found pre-start health and safety review services offered by safety engineers. Has anyone has hired this company before? What are your opinions about their services? Are there other suggestions? Please help me by sharing your answers.
Thanks!