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In the early days, felled logs were transported using simple methods such as rivers to float tree trunks downstream to sawmills or paper mills. This practice, known as log driving or timber rafting, was the cheapest and most common. Some logs, due to high resin content, would sink and were known as deadheads.
Logs with a higher density than the density of water would sink. [2] Other logs would get caught in jams, sloughs, or floods, and become lodged in the riverbed. Such logs were often known as "sinkers" or "deadheads." Loggers attempted to reduce the number of logs which remained in the river in order to maximize profits, but some losses were ...
There the logs were decked onto "rollways." In spring when snow thawed and water levels rose, the logs were rolled into the river, and the drive commenced. [6] To ensure that logs drifted freely along the river, men called "log drivers" or "river pigs" were needed to guide the logs. The drivers typically divided into two groups.
After trees are selected for harvest, the next step in logging is felling the trees, and bucking them to length. Branches are cut off the trunk. This is known as limbing. Logs are taken by logging truck, rail or a log drive to the sawmill. Logs are scaled either on the way to the mill or upon arrival at the mill. Debarking removes bark from the ...
Built in 1640, C. A. Nothnagle Log House, located in Swedesboro, New Jersey, is likely the oldest log cabin in the United States. A conjectural replica of the log cabin in which U.S. president Abraham Lincoln was born, now at the Abraham Lincoln Birthplace Mortonson–Van Leer Log Cabin in New Sweden Park in Swedesboro, New Jersey A replica log cabin at Valley Forge in Pennsylvania A log house ...
D-shape logs: round on the outside and flat inside; Full-round logs: fully round inside and out; Square logs: flat inside and out, and may be milled with a groove which could be chinked. When dealing with milled logs, chinking is a personal preference and not required to seal a house; however, a log house will eventually leak if it is not ...
A felled and delimbed tree is cut into logs of standard sizes, a process called bucking. A logger who specialises in this job is a buck sawyer. Bucking may be done in a variety of ways depending on the logging operation. Trees that have been previously felled and moved to a landing with a log skidder are spread out for processing. While many of ...
A caliper log is a well logging tool that provides a continuous measurement of the size and shape of a borehole along its depth [1] and is commonly used in hydrocarbon exploration. The measurements that are recorded can be an important indicator of wash-outs, cave ins or shale swelling in the borehole, which can affect the results of other well ...