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.
First Steam Locomotive. On Dec. 13, 1850, the first steam engine, Tennessee No. 1, ordered by the Nashville & Chattanooga Railroad arrived at the wharf on the steamboat Beauty, from Cincinnati. The one mile trip on improvised track from the wharf to the S. Cherry St. crossing required 4 days by mule power.