Complex sentence: Money was raised, the plans revised, tenders were called in August 1961 and the building was opened on the 21st of April 1963 for a cost of 44,501 pounds.
Split into simpler sentences: Money was raised, the plans revised, tenders were called in August 1961. The building was opened on the 21st of April 1963 for a cost of 44,501 pounds.