We need leads ( companies to contact within these industries) for a job board

I am trying to generate a excel spreadsheet of potential leads for a job board looking to solicit companies within the following industries
Military / Defense Contracting
Aerospace
Logistics
Offshore Oil
Oil rig
Entry level medical jobs
IT jobs
International security jobs
We need at least 200 companies per industry along with their contacting information as we will contact them at a later date. If anyone has had extensive experience sourcing leads for a job board feel free to contact us.