{"id":64,"date":"2025-09-02T10:00:22","date_gmt":"2025-09-02T10:00:22","guid":{"rendered":"https:\/\/dgmsexam.com\/?p=64"},"modified":"2026-02-04T08:39:12","modified_gmt":"2026-02-04T08:39:12","slug":"%f0%9f%93%98-dgms-tech-st-circular-no-01-06-04-2025","status":"publish","type":"post","link":"https:\/\/dgmsexam.com\/studymaterial\/%f0%9f%93%98-dgms-tech-st-circular-no-01-06-04-2025\/","title":{"rendered":"\ud83d\udcd8 DGMS (Tech.) (S&amp;T) Circular No. 01 \u2013 06\/04\/2025"},"content":{"rendered":"\n<p class=\"has-vivid-red-color has-luminous-vivid-amber-background-color has-text-color has-background has-link-color wp-elements-f50d9972ab2c2ce0a1558bb23abd4c14\"><strong>\ud83d\udcd8 DGMS (Tech.) (S&amp;T) Circular No. 01 \u2013 06\/04\/2025<\/strong><\/p>\n\n\n\n<p class=\"has-color-2-color has-text-color has-link-color wp-elements-220a4e5dd325d7ee5bec1f00ae5aafa2\"><strong>Subject:<\/strong> Quality and conditions of explosives provided for use in mines<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>\ud83d\udd39 Legal Provisions<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Coal Mines Regulations, 2017 \u2013 Reg. 183<\/strong><br>\u279d Explosives provided for use must be of <strong>good quality &amp; in good condition<\/strong>.<\/li>\n\n\n\n<li><strong>Metalliferous Mines Regulations, 1961 \u2013 Reg. 153<\/strong><br>\u279d Same requirement applies.<\/li>\n\n\n\n<li><strong>Observation:<\/strong> Many mine magazines lack <strong>suitable checks &amp; controls<\/strong>.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>\ud83d\udd39 Accident Statistics (2019\u20132024)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>21 fatal accidents<\/strong> due to explosives.<\/li>\n\n\n\n<li><strong>44 fatalities<\/strong> + <strong>12 seriously injured<\/strong>.<\/li>\n\n\n\n<li><strong>Major causes:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Misfires \/ sockets (while drilling into)<\/li>\n\n\n\n<li>Accidental initiation<\/li>\n\n\n\n<li>Projectiles (Deep Hole &amp; Secondary Blasting)<\/li>\n\n\n\n<li>Delayed ignition<\/li>\n\n\n\n<li>Unsafe blasting practices<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>\ud83d\udd39 Recent Case<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>After a blast accident in an <strong>Opencast Coal Mine<\/strong>,<\/li>\n\n\n\n<li><strong>Tests of Electronic Detonators<\/strong> at <strong>CSIR-CIMFR, Dhanbad<\/strong> found <strong>few batches non-compliant<\/strong> with BIS norms.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>\ud83d\udd39 BIS Standards (Explosives &amp; Accessories)<\/strong><\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>IS 18462:2023<\/strong> \u2013 Electronic Detonators (general &amp; permitted type)<\/li>\n\n\n\n<li><strong>IS 7632:1975 (Affirmed 2021)<\/strong> \u2013 Electric Detonators (general &amp; permitted type)<\/li>\n\n\n\n<li><strong>IS 6609 (Part II\/Sec. 1):1973<\/strong> \u2013 Explosives \u2013 General<\/li>\n\n\n\n<li><strong>IS 6609 (Part II\/Sec. 2):1974<\/strong> \u2013 Permitted Explosives<\/li>\n\n\n\n<li><strong>IS 6609 (Part II\/Sec. 3):1980<\/strong> \u2013 Slurry Explosives<\/li>\n\n\n\n<li><strong>IS 6609 (Part III):1973<\/strong> \u2013 Detonators \u2013 General &amp; Permitted<\/li>\n\n\n\n<li><strong>IS 6609 (Part IV):1984<\/strong> \u2013 Detonating Fuses<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>\ud83d\udd39 DGMS Circulars \/ Notifications<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>DGMS Circular (Approval) No. 06, 17\/11\/2014<\/strong><br>\u2013 Test standard &amp; passing criteria of permitted explosives\/detonators (underground mines).<\/li>\n\n\n\n<li><strong>DGMS (Tech.) Circular No. 14, 24\/12\/2020<\/strong><br>\u2013 Precautions against premature blast of SME \/ SMS explosives.<\/li>\n\n\n\n<li><strong>Notifications (G.S.R. 01\/10\/2018):<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>982(E):<\/strong> Conditions for <strong>Transport of Explosives in Bulk<\/strong><\/li>\n\n\n\n<li><strong>984(E):<\/strong> Conditions for <strong>use of Ammonium Nitrate Fuel Oil (ANFO)<\/strong><\/li>\n\n\n\n<li><strong>985(E):<\/strong> Conditions for <strong>Deep-Hole Blasting in Opencast Coal Mine<\/strong><\/li>\n\n\n\n<li><strong>986(E):<\/strong> Conditions for <strong>Blasting in Fire Areas (Opencast Coal Mine)<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>\ud83d\udd39 Compliance Requirements<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Manufacturers &amp; Test Houses<\/strong> \u2192 must comply with BIS Standards &amp; DGMS Guidelines.<\/li>\n\n\n\n<li><strong>Users (Owners\/Agents\/Managers):<\/strong>\n<ul class=\"wp-block-list\">\n<li>Must ensure compliance <strong>before use<\/strong>.<\/li>\n\n\n\n<li>Must establish <strong>proper mechanisms (checks &amp; controls)<\/strong> in mine magazines.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>\ud83d\udd39 Key Exam-Oriented Points<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Reg. 183 CMR, 2017 &amp; Reg. 153 MMR, 1961<\/strong> \u2192 explosives quality &amp; condition requirement.<\/li>\n\n\n\n<li><strong>Accident Data (2019\u20132024):<\/strong> 21 accidents \u2192 44 deaths + 12 injuries.<\/li>\n\n\n\n<li><strong>Recent Non-compliance Case:<\/strong> Electronic Detonators failed BIS norms (tested at CIMFR, Dhanbad).<\/li>\n\n\n\n<li><strong>Important BIS Standards<\/strong>: IS 18462:2023, IS 7632:1975, IS 6609 series.<\/li>\n\n\n\n<li><strong>Key DGMS Circulars\/Notifications:<\/strong> 2014, 2020, and GSR 982\u2013986 (2018).<\/li>\n\n\n\n<li><strong>Action Required:<\/strong> Establish checks &amp; controls in magazines, compliance with standards before use.<\/li>\n\n\n\n<li><strong>\u2728<\/strong><strong> MCQs on Explosives Quality &amp; Safety in Mines<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\u00b7\u00a0\u00a0<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q1.<\/strong><\/li>\n\n\n\n<li>As per DGMS Circular No. 01 (06\/04\/2025), which regulation of <strong>Coal Mines Regulations, 2017<\/strong> requires explosives to be of good quality and condition?<br>A) Reg. 153<br>B) Reg. 179<br>C) Reg. 183<br>D) Reg. 192<br>E) Reg. 210<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> C) Reg. 183<br>\ud83d\udcd8 <strong>Explanation:<\/strong> Reg. 183 of CMR, 2017 specifically mandates good quality and good condition of explosives.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q2.<\/strong><\/li>\n\n\n\n<li>Which regulation of <strong>Metalliferous Mines Regulations, 1961<\/strong> deals with the quality and condition of explosives?<br>A) Reg. 121<br>B) Reg. 183<br>C) Reg. 153<br>D) Reg. 102<br>E) Reg. 199<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> C) Reg. 153<br>\ud83d\udcd8 <strong>Explanation:<\/strong> Reg. 153 of MMR, 1961 states that explosives used must be of good quality &amp; in good condition.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q3.<\/strong><\/li>\n\n\n\n<li>Between 2019 and 2024, how many <strong>fatal accidents<\/strong> occurred in mines due to explosives?<br>A) 15<br>B) 18<br>C) 21<br>D) 25<br>E) 27<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> C) 21<br>\ud83d\udcd8 <strong>Explanation:<\/strong> DGMS analysis shows <strong>21 fatal accidents<\/strong> due to explosives during this period.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q4.<\/strong><\/li>\n\n\n\n<li>The 21 accidents (2019\u20132024) due to explosives caused how many <strong>fatalities<\/strong>?<br>A) 36<br>B) 44<br>C) 51<br>D) 57<br>E) 62<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> B) 44<br>\ud83d\udcd8 <strong>Explanation:<\/strong> These accidents led to <strong>44 deaths<\/strong> and <strong>12 serious injuries<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q5.<\/strong><\/li>\n\n\n\n<li>Which of the following is <strong>NOT a major cause<\/strong> of explosives-related accidents mentioned in the circular?<br>A) Misfires \/ sockets<br>B) Accidental initiation<br>C) Overcharging of detonators<br>D) Projectiles from blasting<br>E) Delayed ignition<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> C) Overcharging of detonators<br>\ud83d\udcd8 <strong>Explanation:<\/strong> The circular lists misfires, accidental initiation, projectiles, delayed ignition, and unsafe blasting as causes \u2014 overcharging is not directly mentioned.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q6.<\/strong><\/li>\n\n\n\n<li>Electronic Detonators recently tested after an accident were found <strong>non-compliant<\/strong> at which institution?<br>A) IIT-ISM, Dhanbad<br>B) CSIR-CIMFR, Dhanbad<br>C) NIRM, Bengaluru<br>D) DGMS Testing Lab, Dhanbad<br>E) ICMR, Hyderabad<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> B) CSIR-CIMFR, Dhanbad<br>\ud83d\udcd8 <strong>Explanation:<\/strong> CSIR-CIMFR (Central Institute of Mining &amp; Fuel Research) tested detonators and found some batches not meeting BIS norms.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q7.<\/strong><\/li>\n\n\n\n<li>Which BIS standard applies to <strong>Electronic Detonators<\/strong>?<br>A) IS 7632:1975<br>B) IS 18462:2023<br>C) IS 6609 (Part II\/Sec. 1):1973<br>D) IS 6609 (Part III):1973<br>E) IS 6609 (Part IV):1984<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> B) IS 18462:2023<br>\ud83d\udcd8 <strong>Explanation:<\/strong> IS 18462:2023 covers Electronic Detonators (general &amp; permitted type).<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q8.<\/strong><\/li>\n\n\n\n<li>Which BIS standard applies to <strong>Electric Detonators<\/strong>?<br>A) IS 18462:2023<br>B) IS 7632:1975 (Affirmed 2021)<br>C) IS 6609 (Part II\/Sec. 2):1974<br>D) IS 6609 (Part III):1973<br>E) IS 6609 (Part IV):1984<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> B) IS 7632:1975 (Affirmed 2021)<br>\ud83d\udcd8 <strong>Explanation:<\/strong> This standard covers Electric Detonators for both general &amp; permitted type.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q9.<\/strong><\/li>\n\n\n\n<li>Which standard deals with <strong>Permitted Explosives<\/strong>?<br>A) IS 6609 (Part II\/Sec. 2):1974<br>B) IS 6609 (Part II\/Sec. 3):1980<br>C) IS 6609 (Part III):1973<br>D) IS 6609 (Part IV):1984<br>E) IS 6609 (Part II\/Sec. 1):1973<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> A) IS 6609 (Part II\/Sec. 2):1974<br>\ud83d\udcd8 <strong>Explanation:<\/strong> This section of IS 6609 covers permitted explosives.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q10.<\/strong><\/li>\n\n\n\n<li>Which BIS standard is related to <strong>Slurry Explosives<\/strong>?<br>A) IS 6609 (Part II\/Sec. 1):1973<br>B) IS 6609 (Part II\/Sec. 2):1974<br>C) IS 6609 (Part II\/Sec. 3):1980<br>D) IS 6609 (Part IV):1984<br>E) IS 7632:1975<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> C) IS 6609 (Part II\/Sec. 3):1980<br>\ud83d\udcd8 <strong>Explanation:<\/strong> It specifies standards for slurry explosives.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q11.<\/strong><\/li>\n\n\n\n<li>Which BIS standard deals with <strong>Detonating Fuses<\/strong>?<br>A) IS 6609 (Part II\/Sec. 1):1973<br>B) IS 6609 (Part III):1973<br>C) IS 6609 (Part IV):1984<br>D) IS 7632:1975<br>E) IS 18462:2023<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> C) IS 6609 (Part IV):1984<br>\ud83d\udcd8 <strong>Explanation:<\/strong> This part of IS 6609 specifies detonating fuses.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q12.<\/strong><\/li>\n\n\n\n<li>DGMS Circular No. 06, dated 17\/11\/2014, relates to:<br>A) Transport of explosives in bulk<br>B) Test standards &amp; passing criteria of permitted explosives\/detonators<br>C) Conditions for blasting in fire areas<br>D) Use of Ammonium Nitrate Fuel Oil<br>E) Precautions in deep hole blasting<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> B) Test standards &amp; passing criteria of permitted explosives\/detonators<br>\ud83d\udcd8 <strong>Explanation:<\/strong> It prescribes test standards for underground mines.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q13.<\/strong><\/li>\n\n\n\n<li>Which DGMS Circular provides <strong>precautions against premature blasts<\/strong> of SME\/SMS explosives?<br>A) Circular No. 06 (2014)<br>B) Circular No. 12 (2018)<br>C) Circular No. 14 (2020)<br>D) Circular No. 07 (2022)<br>E) Circular No. 09 (2023)<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> C) Circular No. 14 (24\/12\/2020)<br>\ud83d\udcd8 <strong>Explanation:<\/strong> It deals with premature blasting of SME\/SMS.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q14.<\/strong><\/li>\n\n\n\n<li>Which notification deals with <strong>Transport of Explosives in Bulk<\/strong>?<br>A) GSR 982(E) \u2013 01\/10\/2018<br>B) GSR 984(E) \u2013 01\/10\/2018<br>C) GSR 985(E) \u2013 01\/10\/2018<br>D) GSR 986(E) \u2013 01\/10\/2018<br>E) GSR 981(E) \u2013 01\/10\/2018<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> A) GSR 982(E)<br>\ud83d\udcd8 <strong>Explanation:<\/strong> This notification specifies conditions for bulk transport of explosives.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q15.<\/strong><\/li>\n\n\n\n<li>Which notification specifies conditions for <strong>use of ANFO (Ammonium Nitrate Fuel Oil)<\/strong>?<br>A) GSR 982(E)<br>B) GSR 984(E)<br>C) GSR 985(E)<br>D) GSR 986(E)<br>E) GSR 983(E)<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> B) GSR 984(E)<br>\ud83d\udcd8 <strong>Explanation:<\/strong> It deals with ANFO conditions.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q16.<\/strong><\/li>\n\n\n\n<li>Which notification lays down conditions for <strong>Deep-Hole Blasting in Opencast Coal Mines<\/strong>?<br>A) GSR 982(E)<br>B) GSR 984(E)<br>C) GSR 985(E)<br>D) GSR 986(E)<br>E) GSR 987(E)<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> C) GSR 985(E)<br>\ud83d\udcd8 <strong>Explanation:<\/strong> This specifically relates to deep-hole blasting.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q17.<\/strong><\/li>\n\n\n\n<li>Which notification deals with <strong>Blasting in Fire Areas of Opencast Coal Mines<\/strong>?<br>A) GSR 982(E)<br>B) GSR 984(E)<br>C) GSR 985(E)<br>D) GSR 986(E)<br>E) GSR 987(E)<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> D) GSR 986(E)<br>\ud83d\udcd8 <strong>Explanation:<\/strong> It provides conditions for blasting in fire-prone areas.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q18.<\/strong><\/li>\n\n\n\n<li>What is the <strong>primary hazard<\/strong> of using explosives not in good condition?<br>A) Reduced production<br>B) Avoidable accidents<br>C) Delay in blasting schedule<br>D) Overconsumption of detonators<br>E) Environmental pollution<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> B) Avoidable accidents<br>\ud83d\udcd8 <strong>Explanation:<\/strong> Poor condition explosives increase chances of misfire, initiation, accidents.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q19.<\/strong><\/li>\n\n\n\n<li>Which body issues BIS Standards related to explosives?<br>A) DGMS<br>B) MoEF&amp;CC<br>C) CSIR<br>D) Bureau of Indian Standards<br>E) Ministry of Defence<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> D) Bureau of Indian Standards<br>\ud83d\udcd8 <strong>Explanation:<\/strong> BIS sets standards (IS codes) for explosives &amp; detonators.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q20.<\/strong><\/li>\n\n\n\n<li>Who is responsible to ensure compliance with standards <strong>before use in mines<\/strong>?<br>A) Explosive Manufacturer<br>B) DGMS Inspectors<br>C) Mine Owner\/Agent\/Manager<br>D) CIMFR<br>E) Local Police<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> C) Mine Owner\/Agent\/Manager<br>\ud83d\udcd8 <strong>Explanation:<\/strong> They must establish proper mechanism for checks &amp; compliance.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q21.<\/strong><\/li>\n\n\n\n<li>Who is primarily responsible for complying with BIS standards during manufacturing?<br>A) Mine Owner<br>B) DGMS<br>C) Manufacturer of explosives &amp; detonators<br>D) CIMFR<br>E) Ministry of Labour<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> C) Manufacturer of explosives &amp; detonators<br>\ud83d\udcd8 <strong>Explanation:<\/strong> They must ensure products meet BIS norms before supply.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q22.<\/strong><\/li>\n\n\n\n<li>Which of the following <strong>pairs is incorrect<\/strong>?<br>A) IS 18462:2023 \u2013 Electronic Detonators<br>B) IS 7632:1975 \u2013 Electric Detonators<br>C) IS 6609 (Part II\/Sec. 3):1980 \u2013 Slurry Explosives<br>D) IS 6609 (Part III):1973 \u2013 Detonating Fuses<br>E) IS 6609 (Part IV):1984 \u2013 Detonating Fuses<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> D) IS 6609 (Part III):1973 \u2013 Detonating Fuses<br>\ud83d\udcd8 <strong>Explanation:<\/strong> Part III covers Detonators (general &amp; permitted), not fuses.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q23.<\/strong><\/li>\n\n\n\n<li>What is the <strong>role of test houses<\/strong> like CIMFR?<br>A) To issue mining leases<br>B) To test quality of explosives &amp; detonators<br>C) To monitor mine ventilation<br>D) To design blasting patterns<br>E) To regulate explosive imports<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> B) To test quality of explosives &amp; detonators<br>\ud83d\udcd8 <strong>Explanation:<\/strong> They ensure BIS compliance by testing samples.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q24.<\/strong><\/li>\n\n\n\n<li>The circular emphasizes developing and implementing which of the following in mine magazines?<br>A) New blasting techniques<br>B) Automated charging machines<br>C) Suitable mechanisms (checks &amp; controls)<br>D) Drone surveillance<br>E) Fire extinguishing systems<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> C) Suitable mechanisms (checks &amp; controls)<br>\ud83d\udcd8 <strong>Explanation:<\/strong> These ensure compliance with statutory requirements.<\/li>\n<\/ul>\n\n\n\n<p>\u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u2753<\/strong><strong> Q25.<\/strong><\/li>\n\n\n\n<li>Main <strong>objective<\/strong> of Circular No. 01 (2025) is to:<br>A) Increase production efficiency<br>B) Reduce noise pollution during blasting<br>C) Ensure explosives are of good quality &amp; prevent accidents<br>D) Reduce cost of explosives in mines<br>E) Promote use of SME over ANFO<\/li>\n\n\n\n<li>\u2705 <strong>Answer:<\/strong> C) Ensure explosives are of good quality &amp; prevent accidents<br>\ud83d\udcd8 <strong>Explanation:<\/strong> The circular focuses on quality, condition, and compliance to avoid loss of life &amp; property.<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ud83d\udcd8 DGMS (Tech.) (S&amp;T) Circular No. 01 \u2013 06\/04\/2025 Subject: Quality and conditions of explosives provided for use in mines \ud83d\udd39 Legal Provisions \ud83d\udd39 Accident Statistics (2019\u20132024) \ud83d\udd39 Recent Case \ud83d\udd39 BIS Standards (Explosives &amp; Accessories) \ud83d\udd39 DGMS Circulars \/ Notifications \ud83d\udd39 Compliance Requirements \ud83d\udd39 Key Exam-Oriented Points \u00b7\u00a0\u00a0 \u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \u00b7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#8230; <a title=\"\ud83d\udcd8 DGMS (Tech.) (S&amp;T) Circular No. 01 \u2013 06\/04\/2025\" class=\"read-more\" href=\"https:\/\/dgmsexam.com\/studymaterial\/%f0%9f%93%98-dgms-tech-st-circular-no-01-06-04-2025\/\" aria-label=\"Read more about \ud83d\udcd8 DGMS (Tech.) (S&amp;T) Circular No. 01 \u2013 06\/04\/2025\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":67,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[58],"tags":[23,20,17,18,25,19,33,32,26,24,30,35,27,21,16,34,15,36,14,22,28,31,29],"class_list":["post-64","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dgms-circular","tag-bis-standards","tag-blasting-safety","tag-coal-mines-regulations-2017","tag-dgms-circular-2025","tag-dgms-exam","tag-dgms-mcq","tag-dgms-notifications","tag-dgms-study-material","tag-dgms-technical-circulars","tag-electric-detonators","tag-electronic-detonators","tag-explosives-in-mines","tag-explosives-safety-in-mines","tag-is-184622023","tag-is-6609-explosives-standards","tag-is-76321975","tag-metalliferous-mines-regulations-1961","tag-mine-accidents","tag-mine-safety","tag-mining-exam-preparation","tag-misfires-in-mines","tag-permitted-explosives","tag-slurry-explosives"],"_links":{"self":[{"href":"https:\/\/dgmsexam.com\/studymaterial\/wp-json\/wp\/v2\/posts\/64","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dgmsexam.com\/studymaterial\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dgmsexam.com\/studymaterial\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dgmsexam.com\/studymaterial\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dgmsexam.com\/studymaterial\/wp-json\/wp\/v2\/comments?post=64"}],"version-history":[{"count":6,"href":"https:\/\/dgmsexam.com\/studymaterial\/wp-json\/wp\/v2\/posts\/64\/revisions"}],"predecessor-version":[{"id":74,"href":"https:\/\/dgmsexam.com\/studymaterial\/wp-json\/wp\/v2\/posts\/64\/revisions\/74"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dgmsexam.com\/studymaterial\/wp-json\/wp\/v2\/media\/67"}],"wp:attachment":[{"href":"https:\/\/dgmsexam.com\/studymaterial\/wp-json\/wp\/v2\/media?parent=64"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgmsexam.com\/studymaterial\/wp-json\/wp\/v2\/categories?post=64"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgmsexam.com\/studymaterial\/wp-json\/wp\/v2\/tags?post=64"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}