Slt a tous se ki viennent sur mon blog. Abonne-toi à mon blog! Un groupe de metal japonais. Retape dans le champ ci-dessous la suite de chiffres et de lettres qui apparaissent dans le cadre ci-contre.

A driller explains the various types of drilling equipment used on rigs. The Marcellus Shale is one of the largest areas of natural gas in the United States, covering parts of Pennsylvania, New York, Ohio and West Virginia. A fracking drilling rig in Pennsylvania. Lehigh students on a field trip looking at a truck converted to run on natural gas. A gas company employee explains to Lehigh students how natural gas can be converted to be used as a truck fuel.