One chimney, in fact, was found to be 150 feet [45 m] high and nearly 40 feet [10 m] in diameter, and it was still growing!
وقد بلغ طول احدى المداخن ٤٥ مترا وقطرها حوالي ١٠ امتار ،‏ وكانت لا تزال تكبر !‏