The Main shaft went to the twenty nine hundred foot level with men working on all levels each working shift, the Brace-man was required to send equipment to the plat at each level, the plat is the area around the shaft at each level.
The Main shaft went to the twenty nine hundred foot level with men working on all levels each working shift-man was required to send equipment to the plat at each level, the plat is the area around the shaft at each level. Each working shift is the Brace.