Subject: Approval under Regulation 208(3) of the Coal Mines Regulations, 2017 for Flameproof/weather proof well glass light fitting rated up to 30 watt, 110 volt, 50 Hz, Type- MWGF constructed in mild steel construction, manufactured by M/s. M-Square Enterprises, Greater Noida (UP) conforming to IS/IEC 60079-0:2017 and IS/IEC 60079-1:2014 for use in belowground Coal Mines in India- Renewal thereof.

Ref: 1. Test report no. IN/CIMFR/TR21/P/1255 dated 30/07/2021 was found furnished with  drawing no. MWG 01.21 (Sheet 1 to 2) dated 19/02/2021  dated 30/11/2011

         2. BIS Licence no. CM/L-8800103312 with endorsement no. 02 dated  11/12/2025

Please refer to your online application no. E-29021/62587/2025/Electrical (HQ) dated 16/10/2025 on the above subject & test reports and other documents submitted in this regard.

I, in exercise of powers conferred upon Chief Inspector of Mines (also designated as Director General of Mines Safety) under Regulation 208 (3) of the Coal Mines Regulations, 2017, hereby renew the DGMS Approval No. 822 of 2023 granted vide this Directorate's letter No. E-29021/61681/2023/EHQ dated 18/12/2023, subject to compliance with the conditions stipulated in the original approval, for a further period of further two years i.e. up to 11/12/2027, for use in belowground Coal Mines in India.

The application for renewal should be made, with updated BIS and test reports with latest applicable testing standards, at least three (03) months before the date of expiry of the approval.