Ellis & Burnand had a sawmill at Mangapehi from 1901 until 1968.
In 1950 the station was moved almost a kilometer north, away from the sawmill, at a cost of £13,405. In that year it had 23,636 passengers, 4 staff and railed 148,093 board feet (349.46 m3) of timber and 28,633 sheep and pigs, earning £3,256 from passengers and £85,473 from freight. https://kids.kiddle.co/Mangapehi_railway_station
As I looked for its history, I found that, sadly, it had been taken down on 2022.