Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Grimeton Radio Station, Varberg' has mentioned 'Steel' in the following places:
Occurrence Sentence Text Source
The Grimeton station had a huge flattop antenna 1.9xc2xa0km (1.2xc2xa0miles) long consisting of twelve (later reduced to eight) wires supported on six 127 m (380 foot) high steel towers.
The rotor is a steel disc measuring 1.6xc2xa0m in diameter and approximately 7.5xc2xa0cm thick at the periphery.
The station property consists of the transmitter equipment, including the aerial system with six enormous steel towers each 127xc2xa0metres high, buildings housing the original Alexanderson transmitter, and short-wave transmitters with their antennae, as well as a residential area with staff housing.