Agriculture and cast iron - most people probably think of heavy engine blocks or useful tools for working in the fields. Yet state-of-the-art sensors play a crucial role in ensuring the correct sowing depth for optimum growth and a bountiful harvest.

The castings for the pressure sensors on John Deere's 1725NT and 1775NT precision air seeders are molded with shell molds and solid cores made from HA International's Croning sand, EcoFlo 3.0, the next generation of environmentally friendly resin-coated sands that are part of the EcoMission product line, with products tested against established environmental criteria.