All Mines and metallic Minerals in and under all and singular the Tenements now or at any Time within One hundred Years before the said First Day of May One thousand eight hundred and forty-four held as Conventionary Tenements of the said Manors mentioned in the said First Schedule hereunto annexed respectively, and all Mines, Minerals, Stone, Substrata, and all other Profits whatsoever in, upon, under, and of all Waste and other Demesne Lands of the same Manors respectively, and all Mines, Minerals, Stone, and Substrata in, upon, under, and of all other Lands lying within or Parcel of the same Manors respectively, and which said last-mentioned Mines, Minerals, Stones, or Substrata shall by such Award be determined to belong to the Duke of Cornwall, do and shall belong absolutely to the Duke of Cornwall as Possessions by the herein-before recited Charter granted, and thereby annexed to the Duchy of Cornwall as aforesaid, but without Prejudice to the Estates or Rights (if any) of any of the present Lessees of the Duke of Cornwall therein.