At a production/manufacturing company, are N95’s mandatory or is any type of mask ok for employees?

A surgical mask was probably sufficient in most production environments. An N95 mask is not required in most production environments but an Industrial Hygienist is best qualified to determine the appropriate type.

Re-evaluate the existing Workplace Respiratory Protection Program if in place before the COVID-19 pandemic. Alternatively, you may be able to use non-medical masks to protect against novel coronavirus spread between co-workers in work areas where the physical distancing measures are not adequately present and enforced.  For the same work areas improved mechanical ventilation can be of benefit.