" Clause 16 of the lease contains some further provisions as regards these and is in these words : " That by virtue of the aforesaid patta, you shall not be competent to offer any obstruction either to me or to my any authorised person to raise stones (used) for utensils or stones, lime stone and ghuting, etc., for buildings which are not covered by this patta and sell the same to me or to tenants, etc., under me to dig bandh, tank, canal and wells, etc., but the terms of the said patta shall hold good in respect of the underground minerals, etc., lying under the said wells, etc." Two things that are abundantly clear from this document are: (1) that the mining rights were specifically granted in respect of gold, silver, copper lead, zinc, iron, mercury, mica sulphur, copper sulphate, coal, chalk, red earth and certain precious stones such as diamond, ruby, emerald, topaz, crystals, etc., and (2) that stones for utensils or stones, limestones, ghuting, etc., and ballast for buildings were specifically excluded from the lease.