Yes.. You have a 3 phase supply but what is your main circuit breaker that supplies your facility? If that is not enough to power those miners.. Then you have to request first to your electric company for your required electricity supply.

Then hire an electrical contractor as others would suggest. This is not a DIY project even if you know how to wire them. It should be designed properly with correct load schedule, wire and breaker sizing. Prepare your proposed miner layout for the contractor to design the cabling layout properly.

Also have your HVAC designed by a professional too. That is a lot of heat load to remove and manage.

This is a big investment and should consult a licensed professional electrical and hvac contractor.

Cheaping out on electric contractor might end up in a disaster.