As stated by Mr. Vargheese Mathew, please refer to the applicable state factories rules.
Prohibition of Sand Blasting
As per the Punjab Factories Rules 1952, Schedule VIII, sand blasting is prohibited. "Prohibition of sand blasting - Sand or any other substance containing free silica shall not be introduced as an abrasive into any blasting apparatus and shall not be used for blasting."
May the attached Schedule VIII help you.
Regards,