Early in the episode, Raylen returns to his motel room, the site of last season's finale shooting, to find two (2) taped outlines of gunman he had shot and killed. In reality, tape or chalk line outlines are only used when the suspect is still alive and needs to be transported to a hospital for life saving efforts. Dead suspects would be photographed as part of an extensive forensics investigation which would most likely preclude the room being returned to the shooter or any other guest for several days.
In the outdoor scenes, the viewer sees Western Cypress trees and brownish mountains in the background, neither of which is found in Kentucky, much less the eastern 2/3 of the United States (filmed in Green Valley, CA).
Mags Bennett (Margo Martindale) gives Walt McCready (Chris Mulkey) a glass of her apple pie moonshine laced with an untraceable poison that leaves the corpse presenting as though the victim died of a heart attack.
It was therefore totally unnecessary and counterproductive for her to order her sons to throw the body down a mine shaft. They could have just called Mags' corrupt police chief son, and he would have reported the death as appearing to be from natural causes, a conclusion no coroner would have been capable of disputing since, as Mags told MacReady, the poison was completely untraceable. Disposing of the body in such a brutal way only increased Loretta McReady's (Kaitlyn Dever) suspicions and drew more heat from investigators.
It was therefore totally unnecessary and counterproductive for her to order her sons to throw the body down a mine shaft. They could have just called Mags' corrupt police chief son, and he would have reported the death as appearing to be from natural causes, a conclusion no coroner would have been capable of disputing since, as Mags told MacReady, the poison was completely untraceable. Disposing of the body in such a brutal way only increased Loretta McReady's (Kaitlyn Dever) suspicions and drew more heat from investigators.