(解説文要約)
坑内から上がると、炭坑のお風呂で汚れを落とします。
昔は男女混浴が当たり前でした。
坑内から蒸気ポンプで汲み上げた水なので油も混じっており、汚いお湯でした。
しかも、みんな浴槽内で石鹸を使うため、
入るのが遅くなると汚く臭いお湯になっていたようです。
After a long day of mining, miners washed off the black coal in a bath.
In the old days, it was natural for both men and women to take a bath together. The bath water was originally dirty, for it had been mixed with oil pumped up from the pit by a steam pump. Moreover, since people used soap to wash right in the tub, it was dirty and smelly by the end of the day.