N.H. Rev. Stat. Ann. § 447:3

If a person shall perform labor or furnish materials or fuel to the amount of $15 or more for the making of brick, by virtue of a contract with the owner thereof, he shall have a lien upon said materials and fuel and upon the brick with the kiln containing said brick, for such labor, materials or fuel. Said lien shall continue for 90 days after said brick are burned, and may be secured by attachment as provided in RSA 447:10.