00736nab a2200181 4500 20260520002854.0 260224s2011 xxu Focus on US shale ene. 2011 23/02/2011 ; 23/02/2011 2 p. ; 30-31 Transcripción del resumen del autor. The most active sector in the current US energy scene is the extraction of oil and natural gas from shale deposits. Production of natural gas in particular, has increased 10-fold since 1990, reaching levels not seen for more than 35 years, writes Judith Gurney 768 Petroleum Review 65 ARTICULO Gurney, Judith 34960 173634 173634 0 0 0 0 241453 BAAB BAAB 2026-03-05 200051633 0 200051633 2026-03-05 16:10:13 2026-03-05 ARTICULO