41. As per which circular Overman shall give instruction in writing to Shotfirer and Mining sirdar when 2 faces comes within 10m of each other? A. 2/1983 B. 6/1983 C. 4/1983 D. 5/1983 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
42. What is the limit of Ph value prescribed by Resource Conservation and Recovery Act, 1976 for serving as chemical additives cement Circular? A. 6.5 to 8 B. 2.5 to 4 C. 5 to 6.5 D. > 10 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
43. Regarding efficiency of roof bolting some circulars were issued which of the following statement is true as per cir 5/2002 and 11/2002? A. efficiency of bolt should be monitored regularly B. anchorage testing machine design should be conducive to testing strength of bolts C. results of anchorage testing machine should be analysed adequately D. intensive training should be given to timber men Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
44. As per DGMS Circular which of the following factors is responsible most for causing the accidents due to Dumpers, trucks/tippers in opencast coal mines? A. Lack of adequate training B. Poor qualification of operators C. Inadequate light D. Huge fleet of machines Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
45. A blasting hole shall not be charged when temperature inside the hole exceeds . . . . . . . . . °C as per circular. Fill in the blank? A. 20°C B. 40°C C. 60°C D. 80°C Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
46. Annual inspection of CHP must be carried out as per which DGMS Circular? A. 2/1999 B. 3/1999 C. 2/2005 D. 3/2005 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
47. As per Circular 32/1964 which of the following is a mandatory task for Colliery Manager? A. Detection of surface fire B. Procuring support materials C. Improving ventilation in mines D. Arranging pumping out water from underground Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
48. In designing pit slopes the guidelines are provided in which circular to prevent accidents due to dump failure? A. 2/2001 B. 3/2001 C. 2/2000 D. 3/1999 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
49. In 10th safety conference emphasis was given on development of portable instrument for which of the following issues? A. detecting hidden cracks in roof B. detecting fire in coal heap C. detecting noxious gases D. detecting PL of coal dust Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
50. As per DGMS circular 7/1966, size of the Bord & Pillar panel is governed by 2 issues. If one issue is system of mechanization and what is the other? A. coal pillar size B. incubation period C. lag on ignition D. gallery width Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
