Two Wolf miner's safety lamps, used in underground mines that may have explosive components in the air such as coal dust or methane. The flame was enclosed in a glass cylinder topped by a fine mesh chimney. Early designs failed because of the fragility of the fine mesh, which then allowed the lamp flame to ignite explosive gasses. The Wolf design protected the interior mesh with a rugged exterior chimney. The larger of these two has a front nameplate with WOLF SAFETY LAMP CO / OF AMERICA INC / NEW YORK in a brass oval attached to the base. This lamp is about 3.5 inches in diameter and almost 12 inches tall. A handwritten label inside the bottom of the base indicates it came from the Sullivan Gold Mine in Val d'Or (Valley of Gold) Quebec, which operated from the 1930s until 1968. The other lamp has THE WOLF SAFETY LAMP Co(Wm MAURICE) Ltd SHEFFIELD engraved along the brass ring at the base. The back of this lamp is stamped A23, and a small brass plaque at the top is stamped 1984. This lamp is about 3.5 inches in diameter and about 8 inches tall. Both are beautiful display pieces.Date: Country (if not USA): State: City: Provenance: William Mayrsohn Collection