The Burnside Chemical Works in Dunedin were the first of their type in New Zealand .
KP 's NZ Drug Company was the first in the country to combine sulphuric acid and bone dust to produce superphosphate .
The Burnside Chemical Works in Dunedin were the first of KP 's type in New Zealand .
KP 's NZ Drug Company was the first in the country to combine sulphuric acid and bone dust to produce superphosphate .