|Depth of | | | | | | | | | | | | | | | | | | | | Ohio, Michigan, Indiana,| | | including Maine, New | | |Number of | Projected |Cost per | in | Mile. | operation. | Plant. | progress. | ------------------------+-------------+--------------+-------------+-------- | Miles. | £ Eastern States, | | | Jerseys, Pennsylvania, | | | | | |Diameter of.