Old South

!! The posted coordinates are not the location of
the cache. !!
This cache may be a bit easier for locals than
tourists but is definately a nice family cache.
Your task is to locate these four well known
structures in the wollongong CBD & Foreshore
area.
At each structure answer the appropriate question
below. All four results will be numbers.
The coordinates for GZ are derived from the formula
34deg 25.(A+B-3291) , 150deg D.(C-1513)
There is likely to be plenty of muggles around so
stealth may be required.
The total travelling distance for this cache is
about 1.3 kM's
Question A : What year was this structure
unveilled?
Question B : What year was the inception of the
mining industry?
Question C : What year did the first Europeans land
in the district?
Question D : Take a GPS mark here. what are the
longitude minutes in whole numbers?