I 
was burning some piles of brush and limbs. Some seasoned some green and some rotted. I was raking the some of the smaller stuff from around the edge of my fire pulling back into fire. When this log flipped over I saw all I can describe it as blue coals or blued charring. Can anyone please tell me what this is, how and why this happens. I'm in my 40's and never seen this ever!!
was burning some piles of brush and limbs. Some seasoned some green and some rotted. I was raking the some of the smaller stuff from around the edge of my fire pulling back into fire. When this log flipped over I saw all I can describe it as blue coals or blued charring. Can anyone please tell me what this is, how and why this happens. I'm in my 40's and never seen this ever!!
