Simplify the following text for a Grade 6 native English-speaking person.
Original: Both the quarry and line opened in 1917 and closed in 1967 , when the Ironstone ran out .
Simplified: The OIR was opened between 1917 and 1919 , was closed in 1967 and the line was ` lifted ' , that is the line was closed and removed , between 1967 and 1968 . The quarry was heavily worked in the Second World War .