Turbo blowers?
For those who do not know, a PRT is a Power Recovery Turbine and it is not a "blower". The three PRT's are driven by exhaust gasses and used the power generated to increase horsepower. Vertical shafts driving onto the crankshaft via bevel gearing transmitted the added power. In at least one instance I know of, in about February 1959, an uncontained PRT failure started a fire which brought down a RAAF P2-V5 Neptune, with the loss of 10 crew, when the wing spar burnt through. The wing failed on finals to the short grass runway at RAAF Richmond, the aircraft impacting into the eastern bank of the Hawkesbury River a couple of miles short of the airfield. It was not a pretty sight.