RSA 426:18 Grading and Certification or Stamping of Native Lumber.

I. For the purposes of this subdivision, "native lumber" means wood processed in the state of New Hampshire by mills registered in accordance with the provisions of RSA 227-I. Such wood shall be considered certified or stamped in accordance with the requirements of this section.
II. (a) Notwithstanding any provision of law to the contrary, a mill registered in accordance with RSA 227-I selling native lumber shall, when required, certify in writing to the purchaser on a form approved by the commissioner of agriculture, markets, and food that the quality and safe working stresses of the lumber are equal to or better than No. 2 grade in accordance with the conditions set forth in the American Softwood Standard PS 20-70, or as amended, provided that lumber for use in load bearing