Minn. R. 5225.0100
APPLICATION FOR OPERATING ENGINEER LICENSE
Any person desiring to take an examination for a license as an operating engineer shall make written application under oath, on blanks furnished by the division. The application shall be accompanied by a corroborating affidavit of at least one employer or an operating engineer possessing not less than a second class engineer's license, certifying to the applicant's operating experience as stated in the application. If affidavits are not obtainable, satisfactory evidence of the applicant's operating experience must be furnished.