| The undersoil heating has been on all night and even though there was a covering of snow this morning, it should be okay. |
| I just wish they'd put in undersoil heating when the ground was built. |
| A day and a half of digging and riddling had produced several piles of authentic clayish undersoil. |
| It is a stipulation of the Premier League that all clubs have undersoil heating in order to allow them to fulfil fixtures. |
| The invention is modelled on the undersoil heating systems at football grounds. |
| Under an azure sky at Almondvale, horizontal trenches marked the areas where undersoil heating was being installed. |
