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