N.H. Rev. Stat. § 248:8
Every railroad, upon the application of any shipper or receiver, or contemplated shipper or receiver of freight, for a switch connection between the railroad and any existing or contemplated track, tracks or railroad of such applicant shall make such connection and provide such switches and tracks as may be necessary for that purpose and deliver and receive cars thereover; provided, that such connection is reasonably practicable and can be installed and used without materially increasing the hazard of the operation of the railroad with which such connection is sought, and that the business which may reasonably be expected to be received by such railroad over such connection is sufficient to justify the expense of such connection to such railroad.
RSA 248:8
1917, 76:5. PL 243 :7. RL 293:7. 1951, 203:47 par. 8, eff. Sept. 1, 1951.