Here's some pics of one of the laydown areas at a coal mine in East kalimantan, Borneo.
Nige is right on the money, it'd cost a fortune to transport anything and you'd lose a ton of money
Echoing what DoosanFan says above we regularly hauled mining equipment from Durban or Dar es Salaam up to the Zambian & Zairean Copperbelt. Even if everything went perfectly the trucks were on the road well over a month from the port to the mine, that's not counting the return trip empty. If a truck broke down a journey time could double. I use the word "road" in this context extremely advisedly. I remember we used to refer to the road between Lusaka & Kitwe in Zambia as the 300km pothole. In the rainy season there would be potholes caused by erosion so deep you could lose a pickup truck in them, and because they were full of water you could never tell if they were a few inches or a few feet deep ....!!
We were using 2 companies back then. One was Fox & Bookless out of Bulawayo - this was back in the days when Zim actually functioned as a country. The other was from Joburg, don't remember the name now.
Far more fun than working somewhere "civilized" IMHO .......I am sure you have lots of stories from all your time working in these developing? countries.