There are four people visible in the image. They are dressed in work attire, including helmets and protective gear. The person on the left is wearing a red helmet and a red jacket, while the person next to him is also wearing a red helmet and a red jacket. The third person is wearing a yellow helmet and a yellow jacket, and the fourth person is wearing a blue helmet and a blue jacket. All of them appear to be engaged in some form of work or activity, possibly related to the mining industry.