A shaft is sunk to get at that coal, and once the coal is reached a first economic value begins to attach to it. Next, further labour, capital and natural forces are applied to the task of hewing the coal out and raising it to the surface. This means that yet more economic values are attached to the ton of coal. These we express by saying that the ton of coal at the bottom of the mine, just hewed out, is worth so much--say 15/-; and later at the pit head is worth so much more--say £1. But the process of production of wealth is not yet completed. The coal is needed to warm you in your house, and your house is a long way from the pit head. It must be taken from the pit head to your house, and for this transport further labour, natural forces and capital must be used, and these add yet another economic value to the coal. We express this by saying that the ton of coal _delivered_ (that is, at your house) is worth not £1, which it was at the pit head, but £1 10s.; and in this example we see that transport is as much a part of the production of wealth as other work. We also see a further example of the truth originally stated that wealth does not consist in the object itself but in the values attached to it. The ton of coal is there in your cellar exactly the same (except that it is broken up) as it was when it lay a thousand feet under the earth with no way of getting to it. In your cellar it represents wealth. In possessing it you are possessing wealth to the amount of 30s. You could exchange it against 30s. worth of some other thing, such as wheat. But the wealth you thus possess is not the actual coal, but the values attaching to the coal. These economic values are being piled up from the very beginning of the process of production until the process of consumption begins. Here is another case which shows how the process of production will add values to a thing without necessarily changing the thing itself.