Whoever performs labor in any tannery where leather of any kind is manufactured completely or partially, whether such labor is performed directly on the hides and skins or in any capacity in or about the establishment, has a lien for his wages on all leather so manufactured in such tannery for labor performed by him or his co-laborers, which continues for 30 days after such leather is made and manufactured, and until such leather is shipped on board a vessel or taken in a car, and may be enforced by attachment within that time.