Mining Turtle Code

--ComputerCraft Mining Turtle program
--By atm959

--Mines straight from the "deployment point" and throws away cobblestone, gravel, and dirt along the way
--Automatically refuels itself with coal it finds

--It checks the last 4 slots every time it mines a block(it reduces them all down to one, by means of dropping items and refueling)

--HOW TO USE(The slots start at 1)
--Place the turtle in a suitable place and refuel it
--Place one cobblestone in slot 16
--Place one coal in slot 15
--Place one gravel in slot 14
--Place one dirt in slot 13
--Run this program

while true do
    turtle.dig()
    turtle.forward()
    turtle.suck()

    turtle.select(16)
    if turtle.getItemCount() > 1 then
        turtle.drop(turtle.getItemCount() - 1)
    end
    turtle.select(15)
    if turtle.getItemCount() > 1 then
        turtle.refuel(turtle.getItemCount() - 1)
    end
    turtle.select(14)
    if turtle.getItemCount() > 1 then
        turtle.drop(turtle.getItemCount() - 1)
    end
    turtle.select(13)
    if turtle.getItemCount() > 1 then
        turtle.drop(turtle.getItemCount() - 1)
    end
end