Wire from ground at gas meter
I'm posting a picture of my gas meter. There are two wires here I'm going to ask about. The first, and the one I'm most curious about, is the wire coming from the ground at the gas meter. In the photo on the left, this would be the bottom left red arrow.
Is this a ground wire to the main house ground bonding system? If I need to ground a new TV antenna or a satellite dish, can I just use this as the ground connecting for it? (If not, what SHOULD I be connecting the antenna or sat dish to?)
The second wire I'm interested in is the wire in the picture at the top right (with a red arrow). This is connected with a grounding block on the gas pipe going into the house. Obviously someone has tried to ground something here, but I don't know what it is (old satellite dish? cable?), and I don't know if they did it right either. I'm a little concerned because the wire in the grounding block is unstripped and I'm fairly certain no electrical current is going to flow from an unstripped wire into a grounding block, unless the grounding block screw has penetrated the wire insulation.
The final question I have:
Is the bottom wire coming from the ground supposed to be connected to that wire at the grounding block, but someone has cut it before I moved into this house?