19U.K.The Barmaster, if he finds any Mine or Vein neglected and not wrought, and not hindered by Water or for Want of Air, shall, if required so to do by any Person or Persons, send to the Owner or reputed Owner, where known to him, and if not known to him, then put up in some conspicuous Place within the Liberty in which the Mine or Vein is situate, a Notice that such Mine or Vein will, at the Expiration of Three Weeks, if not duly and reasonably worked to the Satisfaction of the Barmaster and Grand Jury, and no other sufficient Reason assigned to them, be forfeited; and if at the Expiration of the said Three Weeks the Mine or Vein is not so worked, the Barmaster, in the Presence of Two of the Grand Jury, may give such Mine or Vein to any Person or Persons willing to work the same; provided that nothing herein contained shall authorize the Barmaster to give away such Mine or Vein if the Owner thereof be unable to work the same by reason of such Mine or Vein being under Water, or for Want of Air, so long as the Owner thereof is using efficient and diligent Means to the Satisfaction of the Barmaster and Grand Jury to relieve such Mine or Vein.