This page has been validated.
COAL-MINING
|
|
1. THE OLD WAY—With hand pick.2. THE MODERN WAY—With machine pick.
Page:The New International Encyclopædia 1st ed. v. 05.djvu/91
COAL-MINING
|
|
|
|
1. THE OLD WAY—With hand pick.2. THE MODERN WAY—With machine pick.