Thank you @HandyDan. The 1500°F is the characteristic of Portland Cement I wanted to know. Certainly land management in planning for such an event is only right if building in a forested area. I know those with buildings in or near Yosemite and Glacier National Parks would appreciate knowing this information at this time.
A follow-up question would be then, is there a type of cement available which can withstand a higher temperature without getting real exorbitant in cost, but will still mix well using the Little Dragon?