The hole is at the upper right, down the conveyor belt. But you will need to turn off the electricity to the fence.
You need the hardhat from the Safari. Once you get that, enter the mine and press the button on the timer, which will reset. You only have a few seconds to reach the hole in the fence and climb through. Run up the ore pile, right across the belt, then jump to the barrel by the fence.
(see the related question)
At the Diamond Mines, you need a hardhat. Go to the electric fence control. Turn the switch, and run as fast as you can to the left. Climb the conveyor and jump over to the hole in the fence.
You run left and jump onto the conveyor belt. Jump off the first one and enter the hole in the fence. I hope you mean nabooti island.
In the diamond mines on Nabooti Island, you set the 'off' dial for the electric fence, then run left very quickly up the pile of rock, then right and jump to the right from the frame support to reach the hole in the fence.
The diamond mines have an electric fence around them. Get a hardhat from the Safari and enter the lower mine to the right. Turn the switch that cuts off the electric power briefly. Run quickly left, up the pile, then right on the conveyor belt. Jump through the hole in the belt and go right until you find the hole in the fence. Quickly jump up and through.
You have to turn off the electric fence inside the main part of the Diamond Mines. You need a hardhat from completing the Safari. When you turn the timer, you have to quickly run to get through the hole in the fence: run up the pile, then across to the right and down through the hole in the conveyor belt.
You will need the hardhat to enter the mine. Get it from the Safari. There is a hole in the fence at the upper right (below the right side of the conveyor belt). But you need to turn the power off temporarily. Enter the mine and press the timer for the electric fence. It will set itself fully back and begin to move clockwise. You have that much time to get through the hole in the fence. Run left, up the pile, jump onto the conveyor belt, run right, and jump through the gap in the belt, to reach the hole in the fence.
You need the hardhat (from Big Zeke at the safari) to enter the mine. Go right, past the guard, and find the timer for the electric fence. Pressing the dial turns it fully, and you have to get up to the hole in the fence before the power comes back on. Run left up the ore pile, jump onto the belt, and run right and jump to the right. Get through the hole in the wire.
Run quickly up the pile at left, across the conveyor at the top, and farther right to the hole in the fence.
The electric fence is deactivated by pressing the "off" timer in the mine entrance. You have very little time to run left, up the ore pile, then right across the conveyor to reach the hole in the electrified barbed wire.
At the Diamond Mine, you need a hardhat to enter the mine. You can get one at the Safari. Enter the mine to the right, and press the dial on the electric fence control. This will turn off the power, but only for a very short time, as indicated by the moving timer knob. You must run left, up the ore pile, right across the conveyor belt, down through the hole, to the opening in the fence wire.
At the Diamond Mine, you need a hardhat to enter the mine. You can get one at the Safari. Enter the mine to the right, and press the dial on the electric fence control. This will turn off the power, but only for a very short time, as indicated by the moving timer knob. You must run left, up the ore pile, right across the conveyor belt, down through the hole, to the opening in the fence wire.
The conveyor belt is the large flat walkway at the top of the ore pile outside the mine. Once you set the timer to turn off the electric fence, run quickly up the ore pile, across the conveyor belt to the right, and down through the hole to the broken fence. (see related question)