LE CREUSETSignature Enameled Cast-Iron 9-Quart Round French (Dutch) Oven, Flame

Can I use this to cook on a regular gas stovetop before placing it in the oven?

Can you use in directly on campfire coals?

Hello! Is the 9 qt dutch oven 6.8" tall with or without the lid? Thank you for checking for me! :)

What sized stainless knob replaces this 7.25 quart round pot, in order to handle above 500'F for bread baking?