Miners' book

Hi all I am looking for a book for miner and I follow the hints of where it should be but I havent found it. Any aditional clues?

Thanks in advance guys,
Take care

Look around the southwest (bottom left) corner of the Forgotten Forest. There is a crashed helicopter close to the southern edge of the map. It can be hard to see because of the vegetation, so you may need to search around the area, but be careful of the radiation around the map edge. The book is in a pile of bones next to the helicopter.