Watch "Sappers clear a TM-62 anti-tank mine using a DZM-1, a Ukrainian-designed remote mine clearance device for anti-tank mines that may be booby-trapped." on Streamable.
iirc the center bit thats unscrewed is the detonation device. the reason they are doing it at length like this is because mines are sometimes booby trapped with something underneath them to deter or slow down removal