If you burn a flag, probably a cotton flag, on the steps, probably
limestone steps?, of city hall or the federal building, and you get soot
etc. on the steps, how long does the dafacement last?
Assuming the fire is only a millimeter or less above the steps, is there
actual damage, or only soot deposits on top of the stone?
'Assume it's not a flag but a light blanket of the same size and
material as a flag, that was being used to sit on duing a barbeque, and
which somehow caught on fire and burned while on one's cement driveway
or limestone steps. How long would the soot or other damage remain,
until it rains, forever, or how long?
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