I have no idea now.
I joined CCS(former ZC) in 1963 and left there in 1973 for my own will.
I did do all my best to CCS, and CCS didn't forget me when they need me.
In 1979, I was invited by BV as their surveyor and didn't need to stay full time in their office.
I think I have been quite lucky in my working period of time.