derailment: form of train incident

railroad tie: support for the rails in railroad tracks

rail: linear bearing and guide elements used in rail transport

Amazon rainforest: large rainforest in South America

group of humans: any set of human beings

crane: type of machine specialised in lifting objects

road transport: collective term for all forms of transport which takes place on roads

Porto Velho: municipality of Rondônia state, Brazil

Madeira River: river in Bolivia and Brazil

worker: person who works

railway: interconnected network of infrastructure used for train rail transport