Simplify the following text for a Grade 6 native English-speaking person.
Original: In 1954 the first stages of development began in Ravenscraig turning a green field into a site for steelworks .
Simplified: In 1954 , Colvilles began the first stages of development in Ravenscraig . Turning Ravenscraig from an empty field into a site for steelworks .