| in | Mile. | operation. | Plant. | progress. | ------------------------+-------------+--------------+-------------+-------- | Miles. | £ | | Louisiana, Texas, | | | | | | | including Maine, New | | | | |Depth of | | | | | | | Delaware, and Maryland | 3,503 | 27,952,500 | 2,020 | 7,979 | | | | | .