I remember well this accident. I was on holidays in Portugal and we were stuck there because of the airline workers strike at the same time. I don't know if it affected in anyway the accident.
>The Moimenta-Alcafache train crash (Portuguese pronunciation: occurred on 11 September 1985 in Mangualde, Portugal, in the Portuguese Linha da Beira Alta. It killed about 150 people(Unofficially), making it the worst rail disaster in Portuguese history.https://www.youtube.com/watch?v=Q9xCx39IN3w