When the cowboys from Yellowstone Dutton Ranch go to help a neighboring ranch handle the branding of that season's new calves, the show depicts the ranchers using a propane rack to heat the branding irons to the proper heat for branding.
But modern ranchers freeze the branding irons instead of using heat, some using a mix of alcohol and dry ice, and others using the preferred process of freezing with liquid nitrogen, which is regarded as the safest and least painful.
Freezing the iron results in the brand showing up in the steer's fur as snow white fur, instead of burning leaving a severe third degree burn scar, by modifying the follicles under the area of the iron with frigid cold.
The freezing process results in a much cleaner brand that is easier to read at a distance. The frigid frozen cold of the brand traumatizes the hair follicles, and when the fur grows back, the follicles are only able to produce snow white fur against the darker surrounding fur.
But modern ranchers freeze the branding irons instead of using heat, some using a mix of alcohol and dry ice, and others using the preferred process of freezing with liquid nitrogen, which is regarded as the safest and least painful.
Freezing the iron results in the brand showing up in the steer's fur as snow white fur, instead of burning leaving a severe third degree burn scar, by modifying the follicles under the area of the iron with frigid cold.
The freezing process results in a much cleaner brand that is easier to read at a distance. The frigid frozen cold of the brand traumatizes the hair follicles, and when the fur grows back, the follicles are only able to produce snow white fur against the darker surrounding fur.
Even though the show blends many Native American elements, the Shoshone have been on site as consultants for the production. Interestingly, the Shoshone do not have a ground burial as depicted in this episode, nor do they bury horses as an afterlife vessel with the dead as shown. The Shoshone have historically buried their dead in caves, talus slopes, and other landslide coverings or cremation.
The ritual of burying a person alongside a horse can be found in Apache, Lakota, Nez Perce traditions as well as the members of the Blackfeet confederacy (the latter three tribes are in close proximity to Montana). The rationale being the horse served as a "spirit guide" to the afterlife, they serve as a bridge between the human and the divine.
At 28 min in, Jaime and Beth are fighting in his SUV driving down the road. When they stop and both get out Jaime closes his driver side door. They then walk down the street arguing. When Jaime returns to his SUV to get in, his driver side door is now open.