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•
Portland Cement
CaCO
3
limestone
+ sand, shale, clay & gypsum.
D
¯
•
Ca
3
SiO
5
Ca
2
SiO
4
Ca
3
Al
2
O
6
, Ca
4
Al
2
Fe
2
O
10
+ CO
2
1,1,1,2-tetrafluroethane
Update this next time round to 2000 measured temps. Global surface temperature increased 0.74 ± 0.18 °C over last 100 years.