The datasheet for the resistor says wire wound. Most likely nichrome. The 300 W rating is with a heatsink and is 150 W in free air. That would lead to 3.9 amps (R*I^2) for 150W. With a 2.75" x 8" body, that can be a number of turns.
The datasheet for the resistor says wire wound. Most likely nichrome. The 300 W rating is with a heatsink and is 150 W in free air. That would lead to 3.9 amps (R*I^2) for 150W. With a 2.75" x 8" body, that can be a number of turns.