82-1-102. Doing business within state -- resident agent. A person, firm, or corporation shall be deemed to be doing business within the state of Montana when engaged in such geophysical exploration within the boundaries of this state and shall, if not already qualified to do business within this state with a designation of an agent within the state for service of process prior to such time, file with the secretary of state of the state of Montana an authorization, which authorization shall designate a resident agent for the service of process in any action which may be pending in a court in this state, which cause of action may have arisen out of such geophysical exploration.