Complex sentence: In September 1993 Iwo Jima LORAN-C transmitter was shut-down and its tower was dismantled; the service is now provided from LORAN-C transmitter Niijima.
Split into simpler sentences: In September 1993 Iwo Jima LORAN-C transmitter was shut-down, and it's tower was dismantled. The service is now provided from LORAN-C transmitter Niijima.