The Public Utilities Commission may require, by order served on any public utility in the manner provided in this chapter, for the service of orders, the production within this state at such time and place as it may designate, of any books, accounts, papers, or records of the public utility relating to its business or affairs within the state, pertinent to any lawful inquiry and kept by the public utility in any office or place without this state, or, at its option, verified or photostatic copies in lieu thereof, so that an examination thereof may be made by the commission or under its direction.
SDCL 49-34A-41