Complex sentence: In 1755 the Elkridge Furnace was founded at the Elkridge Furnace Complex, a historic iron works located on approximately and including six remaining buildings of an iron furnace which operated into the 1860s.
Split into simpler sentences: In 1755 the Elkridge Furnace was founded at the Elkridge Furnace Complex. It is a historic iron works located on approximately and including six remaining buildings of an iron furnace which operated into the 1860s.