1,283 | 3,919 | | |Diameter of | Projected |Cost per | in | Mile. | operation. | Plant. | progress. | ------------------------+-------------+--------------+-------------+-------- | Miles. | £ | £ | £ | | | | including Maine, New | | | | | | |of | | Iowa, and Wisconsin | 1,835 | 7,338,290 | 5,762 | 3,999 |-------------+--------------+-------------+-------- Totals and averages | 10,289 | 66,653,907 | 9,632.