3 another mines are on left side. So, you must fight for them.
And yes, there are fewer Oil Derricks, because more OD are a bit imbalanced I think...
Still it's a DEmake map
if i see good from pic is on map 10 oil dericks .in original is 16 oil dericks they making 4partys.many oils was conpensation for ore mines... i got idea u can use airport> soviet airfield ps : no idea for hospital xD