Map of location of 7.2:
2 separate quakes. 6.6, and one minute later 7.2
Per MSNBC
I worked at a mine on the west side (Indonesian) of Papau New Guinea. Another engineer there was designing a wall to keep the haul trucks from falling over the edge of a dumping area.
He designed it to withstand an 7.4 EQ which was a fair possibility of happening. His boss at the mine laughed and said “If we even get a 6.4 here the whole place is toast. Just build it so it won’t fall over if a truck hits it at 20 mph.”
Map of location of 7.2: