Subject: Approval under Regulation 181 (3) of the Coal Mines Regulations, 1957 for  flameproof/weatherproof (IP-65) head light rated at 55 W, 12 V AC fitted with toughened type-A glass (incorporated with 10 W, 12 V AC, pilot light)

type No. KHL-A & B manufactured by M/s. Kaysons Techno Equipments Pvt. Ltd., Vithal Udyog Nagar, Gujarat conforming to IS/IEC 60079-1:2014, IS/IEC 60079-0:2017 and IS/IEC 60529:2001(Reaffirmed 2014)  for use in belowground

coal mines– Renewal thereof

Sir,

Please refer to your online application no. E-29021/62576/2025/ Electrical (HQ) dated 14/10/2025 and CIMFR test report no. IN/CIMFR/TR-19/H-191 dated 20.11.2019 with Type examination certificate no. CMF 19 IN Ex 0026 dated 19/11/2019 &

drawing no. HL001-15, Rev.05 dated 26/08/2019, BIS License No. CM/L- 7357884 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. 471 of 2000)

granted vide this Directorate's letter No. 464/68/EHQ dated 24.01.2000 for a further period of five years, i.e. up to 26/11/2030 for use in belowground Coal Mines. The conditions mentioned in the original approval and subsequent renewal letters

shall be strictly complied with.

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