長ちょう壁へき式しき採さい炭たん
Meanings
Noun
Mining
1. longwall mining
Kanji used
long
wall
ceremony
collect
charcoal
Composed of
head; chief; merit; strong point; superiority; major
wall; partition; barrier; obstacle; Chinese "Wall" constellation (one of the 28 mansions); wall (of stones)
way; style; ceremony; rite; wedding (ceremony); equation
coal mining; coal extraction