long hole drilling method/animation/ raise development / raising methods in metal

in this video i've discussed about the raising method i.e. LONG HOLE raising method with interactive animation in metal mine. HOPE THIS VIDEO WILL BE HELPFUL TO YOU!!! credit to our prestigious dignity - Prof. Neeraj Yadav terminology of ug metal : https://youtu.be/Omz5_HcB49k raising method in metal mine: - open raising : https://youtu.be/5jzHx94sC_4 - two compartment : https://youtu.be/vtsJrlQY8js - long hole drilling : https://youtu.be/OInJDkLfbtw - alimak raising : https://youtu.be/_8VPY65KhEA - raise borer : https://youtu.be/fOMB5QNlri0 stoping method: - overhand stoping : https://youtu.be/yy6T4n2d8ac - underhand stoping : https://youtu.be/jhFObbzpx2s - breast stoping : https://youtu.be/cdRwfo4QnJ0 - cut and fill stoping : https://youtu.be/dHknqaa6J68 SUPPORT AND SUBSCRIBE TO MY CHANNEL!!! YOU ARE THE BO$$!!! #longholedrilling #raisingmethod #raisedevelopmentinmetal Long hole drilling method : In this method, the size of the raise is marked on the floor of upper level. The center of the raise in the upper level roof and on floor. Raising is through long hole. Applicability: - length : 15-50m - inclination - very steep incline to vertical (55-90 deg) long hole drill is performed by JUMBO Drill: specification of drill: - jumbo raise drill - compressed air operated - dia of the hole 50 to 75mm - dia of center hole 100- 125mm - length of hole equal to length of raise working cycle: - Drilling : throughout the whole length of rise - Charging & blasting : wooden/steel plug, explosive, detonator, stemming material, 3-6m length per blast. - Ventilation: cleaning the blasting fumes - Mucking : It will be done after each blast - Dressing & support - Raise will be dressed & supported after complete excavation Disadvantage - protection against misfire is difficult. affiliate link:- amazon.in elements of mining tech -vol 1-dj deshmukh : https://amzn.to/2EVrzFH elements of mining tech -vol 2 -dj deshmukh : https://amzn.to/2PZm1Aq elements of mining tech -vol 3-dj deshmukh : https://amzn.to/2EVfVuh flipkart- elements of mining tech -vol 1 -dj deshmukh : http://bit.ly/34YdXnI elements of mining tech -vol 2 -dj deshmukh : http://bit.ly/2PXEVHS VIDEO: title video - Video by KML from Pexels end video - Video by Gam Ol from Pexels SEND YOUR QUERIES ON :- facebook:- https://www.facebook.com/mining_mafia... instagram:- https://instagram.com/mining_mafiaa?i... mining mafia, open raising, raising in metal mines, different types of raising method, raising method in metal, open raising in metal mine, metalliferous mining method, two compartment method, raising with two compartment, metal mining, metal mine, long hole raising, long hole drilling, https://youtu.be/OInJDkLfbtw