A letter from Mr. James Ryan, director of coal mines (late of the Netherton Colliery, near Dudley) on his method of ventilating coal mines
Subtitle: for which he received the gold medal and 100 guineas from the Society for the Encouragement of Arts, Manufactures, and Commerce, Adelphi
Series: Goldsmiths'-Kress library of economic literature -- no. 21424.16; Making of the Modern World
Publisher: Printed for the Society
Published: 1816
Place of publication: London
Language: eng
Number of pages: 31
Subjects: Coal mines and mining; Safety measures
Notes: Goldsmiths'-Kress no. 21424.16.