(解説文要約)
スラ棚は、絵のようにスラに積んで運んできた石炭を、
炭函の上でひっくり返して積みかえるための設備でした。
中規模以上のヤマで、傾斜が急な所ほどよく利用されたようです。
Suradanais a platform where carriers loaded coal skips with coal they carried from the coal face.
It was efficient because carriers could remove coal directly from coal boxes into the skip by flipping over the box.
Suradanawas frequently installed at middle orlarge sized coal mines where slopes were steep.