Complex sentence: However, the company's $5,000 worth of silver and other valuables was not able to be retrieved, even the best locksmiths or oxy-acetylene torches could not open the room.
Split into simpler sentences: However, the company's $5,000 worth of silver and other valuables were not able to be retrieved. Even the best locksmiths or oxy-acetylene torches could not open the room.