local function primeMine()
    local reps = 0
    while true do
        local _, blockData = turtle.inspectDown()
        print(blockData.name)
        if blockData.name == "minecraft:bedrock" then
            break
        end
        turtle.digDown()
        turtle.down()
        reps = reps + 1
    end
    while reps > 0 do
        turtle.up()
        reps = reps - 1
    end
end

primeMine()