NO: E-29021|62367|2025|Electrical(HQ)

                                                                                                                                                                                                                               Dhanbad, Date: 23/07/2025

                                                                                                                                 (DGMS Approval no. 121 Group-I of 1976)

From

Director General of Mines Safety
Directorate General of Mines Safety,
P.O & Distt: Dhanbad - 826 016.

To

ASHOK KUMAR CHOKHANI, ABC ELECTRICALS PRIVATE LIMITED, 23A NETAJI SUBHAS ROAD FORTUNA TOWER, 10TH FLOOR, ROOM NO. 44 KOLKATA - 700001 (OPPOSITE COAL BHAWAN)
West Bengal, KOLKATA, KOLKATA, 700001

Sub- Approval under Regulation 208(3) of the Coal Mines Regulations, 2017 for Flameproof pull chord switch, Type- ABC-75/PC rated at 250 VAC and the operating voltage limited to a maximum of 30V, 50Hz of cast iron construction casing and boltless cover fitted with incoming and outgoing flameproof terminal box (detachable) and cable sealing box, manufactured by M/s. ABC Electricals Private Limited, Kolkata conforming to IS/IEC 60079-0:2017 and IS/IEC 60079-1:2014 for use in belowground Coal Mines – Renewal thereof.

Dear Sir,

Please refer to your online application No. E-29021/62367/2025/Electrical (HQ) dated 27.05.2025 on the above subject and test reports and other documents submitted therewith 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 approval (DGMS Approval no. 121 Group-I of 1976) granted vide this Directorate's letter No. 299/A/76/1003/EHQ dated 01.09.1976 for a further period of two years, i.e. up to 22.07.2027 for use in belowground Coal Mines.  The conditions mentioned in the original approval and subsequent renewal letters, if any, shall be strictly complied with and the test reports of all the electrical items covered under this approval, conforming to the latest testing standards, shall be submitted within three months, if not submitted before.

The application for renewal should be made at least three (03) months before the date of expiry of this approval.