Crossword clues for the word: HEERLEN The word HEERLEN has appeared as an answer to at least 2 crossword clues on different crossword puzzles. Crossword clues for HEERLEN Showing 1 to 2 of 2 results Clue(s) Industrial city in Limburg, Netherlands; a major coal-mining centre until the early 1970s Industrial city in Limburg, Netherlands; a major coalmining centre from the late 19th century to the early 1970s