Ultratech said it's wholly-owned subsidiary Gotan Lime Stone Khanij Udyog Private (GKUPL) has received an order from the department of mines in Rajasthan for cancelling transfer and mining lease of limestone mines located in Nagaur district alleging procedural irregularities in transfer of the mines in the name of GKUPL, it said in a BSE filing.
"The matter is being challenged and is likely to be heard on January 7, 2015," it added.
Ultratech said the supply from the mines was in addition to its other supply from existing mines and other sources.