50 YEARS OF OPERATION 4 1. Water vapor rises from the MTR (middle), ETR (left) and ATR (right), all at power providing neutrons for customers. 2. ATR Control Room, 1971. 3. ATR Canal, 1971. 4. ATR reactor top. 5. ATR Health Physics office. 6. Work being performed in the ATR Canal area. 6 5