25 kg bag of cement
CO2e: 25kg (16 days 15 hours)
Mark Brinkley gives the price of a 25kg bag of cement as £2.77 in September 2005.
(http://www.housebuildersupdate.co.uk/2005/09/building-materials-price-update.html)
1kg cement causes about 1 kg CO2e so if carbon taxes applied the following prices would hold
| CO2 tax in £/t | Bag of cement in £ |
| 0 | 2.77 |
| 10 | 3.02 |
| 40 | 3.77 |
| 100 | 5.02 |