Section 123(2) in The Coal Mines Regulations, 2017
(2)The owner, agent and manager of every mine having workings below ground shall, before commencing any operation, frame, in consonance with the Strata Control and Monitoring Plan framed under sub-regulation (1) and with due regard to the engineering classification of strata, local geological conditions, system of work, mechanisation, and past experience, and enforce the support plan specifying in relation to each working place the type and specifications of supports and their intervals:Provided that in respect of a mine where development operations are already in progress, the support plan shall be framed and enforced within thirty days of the date of coming into force of these regulations.
