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In page Bayonne:

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In 1951, the Lacq gas field was discovered in the region;[7] most of its extracted oil and sulphur are shipped from the port of Bayonne.[8] During the second half of the 20th century, many housing estates were built, forming new districts on the periphery. The city developed to form a conurbation with Anglet and Biarritz; this agglomeration became the heart of a vast Basque-Landes urban area.[citation needed]