On the top of this cement kilm is the walking path and workers pour out oyster and coal ash from here 灰窑主体之顶部为工作走道，系铺设烧灰材料逐层倾倒蚵壳和煤炭的场所。
2.
They also built a brick wall about 2 meters with 2 doors in the front and rear section for workers to pass in and out 主体上方尚有增建高约2公尺左右的砖壁，四周封闭仅于垂直中轴线的二端各开设一处门洞，以作为进出工作走道的门户。
