Hi, I don't know anything about the explosion your asking about but my great grandfather worked for the Pringle Powder company. He shot oil wells with nitro. His name was Deli Childers and I remember he lived on a farm on Miller Mill road just off hwy 54 at one time. The last place that I remember him living was where the vocational school is now off 15th street. I remember my dad talking about him hauling that nitro around and that they used some empty nitro cans to cave in an old underground mine shaft on my granddad Chapmans farm on Boston Lafoon Rd.