<h1>Coal mine blast injures three workers, raising workplace safety and blasting-procedure compliance concerns and prompting technical investigation.</h1> An explosion at an SECL open cast coal mine injured three workers after explosives had been laid and the blasting gang was returning to a safe detonation area; flying rock fragments struck workers and vehicles. SECL reports minor injuries treated at its regional hospital and states a prima facie technical error is being probed, raising issues of compliance with blasting procedures and onsite safety protocols.