Ihttp://gearnuke.com/witcher-3-get-dlc-contract-missing-miners-ps4-xbo-pc-location-map/
don't get your hopes up for a long adventure.. it takes about 5 minutes.
the quest wasn't missing minors,, it was missing any creativity and content
, really a poor choice for the first free DLC , took me longer to find it on the map than do the quest : )
compared to the other free DLC of Yenn's free Outfit though i would choose the minors quest,,, was really hoping Yenn would get a cool new outfit,, instead she got go go Pump boots and Lacey leggings so she fits right in with every other trashy skank in the game,, least you can still equip the old outfit she wears that actually has style and character to it ,,
don't know why the Devs think Trashy = Sexy ,, was nice that Yenn had some Class and Style for a week atleast .