Since the invention of Ductile Iron, also known as Spheroidal Graphite Iron or Nodular Cast Iron in 1949, it has become the most preferred pipe material for water supply and pressure sewerage applications around the world.ince the invention of Ductile Iron, also known as Spheroidal Graphite Iron or Nodular Cast Iron in 1949, it has become the most preferred pipe material for water supply and pressure sewerage applications around the world.
The 1994 Federal Register TRI listing of chlorsulfuron (59 FR 1788, January 12, 1994) also cited a slight treatment-related decrease in maternal fertility in the F3 generation observed in a rat chronic toxicity study (Ref.
Traffic Signals Information. The first traffic signal in Queensland was switched on, 21 January 1936. It was located at the intersection of Ann, Upper Albert and Roma Streets. Queensland now has around 1,700 signalised intersections under the central control of a fully integrated Intelligent Transport System (ITS) known as STREAMS.