NO: MSE-29022|62501|2025|MSE(HQ)

Dhanbad, Date: 25/11/2025

DGMS APPROVAL NO.-MSE_62501/4

From

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

To

LAXMAN SOMA, CSK Technologies, # 3-5-885/1, 1ST FLOOR, S.A.TOWERS, HIMAYATNAGAR, HYDERABAD - 500029, TELANGANA
TELANGANA, Ranga reddy, HYDERABAD, 500029

Subject: Approval under Regulation 208 (3) of the Coal Mines Regulations, 2017, and 2(2) of the Metalliferous Mines Regulations, 1961, of ‘intrinsically safe cum Weather proof (IP-65) LED Miner’s Safety Cap Lamp manufactured by M/s CSK Technologies, Hyderabad – Renewal thereof.

Sir,

Please refer to your online application ID No. 62501, dated 09.09.2025 on the above subject.

In view of the satisfactory performance reports from mines and test report from CSIR-CIMFR, I, in exercise of powers conferred on the Chief Inspector of Mines also designated as Director General of Mines Safety, hereby renew the approval under Regulation 208 (3) of the Coal Mines Regulations, 2017, and 2 (2) of the Metalliferous Mines Regulations, 1961, of “intrinsically safe cum Weather proof (IP-65) LED Miner’s Safety Cap Lamp, model – CLL5M” manufactured by M/s CSK Technologies, Hyderabad for use in belowground Coal and Metalliferous mines subject to the compliance with the following conditions:

1. All the conditions of the approval granted vide this Directorate vide letter No. S-66021/05/2008-Genl/6071 dated 21.11.2008 and amended vide this Directorate’s letter No. S-66021/05/2008-Genl/2378 dated 28.08.2012 shall remain applicable along with other conditions mentioned in this approval.
2. The approval shall remain valid till the manufacturer has a valid BIS certification.
3.  Test reports conforming to IS/IEC 60079-11:2023 shall be submitted within three months from the date of issuance of this letter. 
4. The product shall be tested at any Govt./Govt. Approved laboratory whenever standard of testing regime changes and the approval is revalidated from this Directorate under new/revised testing standard (s).
5. Further renewal of the approval can be sought through online application at least 90 days prior to the expiry of the validity.
6. The validity of the renewal shall be for the period of 02 years i.e. up to 21.11.2027.

Your Sincerely,