tamping bar การใช้

• Another theory is that section hands in early times used a tool called a gandy, a metal tamping bar.
• The Royal Geological Society of Cornwall was founded in the town in 1814 and about 1817 was responsible for introducing a miner's safety tamping bar, which attracted the Prince Regent to become its patron.
• Some sources even list the goods manufactured by the company, i . e ., " tamping bars, claw bars, picks, and shovels . " But others have cast doubt on the existence of such a company.