An estimated 30T FOG occurred within the X Vein 625 level, at the intersection of the X Vein ore drive and access to the North Zone orebody; a three way intersection. Believed to have occurred at the 0600 firing time; a long-hole stope firing on the X Vein, from the 695 down to the 625, a little over 500 ft away. The 625 is chained off with a No Entry sign, barricade and berm.