And be it enacted, That the said Commissioners hereby appointed shall (in the meantime, and until they shall have made their final Award) sit from Time to Time, and as often as they in their Discretion shall think fit, to hear and determine all such Complaints and Disputes as may arise or be brought before them by or between any Persons being in the Possession of or claiming any Title to or Interest in any Gale, Pit, Level, Work, or Quarry as to how far and in what Manner the same may or ought to extend or be worked by either Party, or touching any other Complaint which any such Person or Persons may prefer against any other Persons concerning or in anywise relating to the Working or Enjoyment of the said Gales, Pits, Levels, Quarries, or Works respectively, or otherwise howsoever; and the said Commissioners are hereby authorized, by Summons under their Seal, to require the Attendance of all such Persons as they may think fit to call before them upon any Question connected with or relating to such Complaint, Dispute, or Difference touching or concerning the opening or working of the said Gales, Pits, Levels, Quarries, or Works, or the Extent or Boundaries or the working thereof respectively ; and also to make any Inquiries and require any Answer relative thereto; and also to administer Oaths and examine all such Persons upon Oath, or, in lieu of requiring such Oath as aforesaid, the said Commissioners may, if they think fit, require any such Person to make and subscribe a Declaration of the Truth of the Matters respecting which he shall have been or shall be so examined.