Screaming or howling in Letcher County, Kentucky

I was working as a security guard at a strip mine location in the mountains of ky near Whitesburg. One night after making my rounds I came back to the guard shack, did my report and was just relaxing listening to the rain........that's when I heard a loud crunching sound beside the shack. So I stood up and watched the shadow from under the sides of the shack.it was moving towards the door. A few seconds later it was trying to open the door by pulling on it. That's when I yelled what do you want........That was when I heard the most terrifying sound ever, like a screaming howl. And it then began to pull harder on the door. So I got a poker and put it in the coal stove that was our heat source for the shack..it got red glowing hot. I then told whaterver it was what i had and was going to do with it if it opened the door. After a few minutes it got quieter and I watched it's shadow move from under the door. After several minutes I made a decision to get to my car..I threw open the door of the guard shack so that the light from inside would show a little outside.and I made a run for my car,got in locked the doors started it up put it in drive and got on the C.B. radio to inform the other guards of what I had just encountered.I stayed the rest of the night in my car.The next morning when my relief showed up I informed him of what I had encountered and I looked for footprints.but the heavy rainy made it difficult to find any that would be useful. But I know what it was without a doubt.it was A Sasquatch!!