Where is chalk river




















Click below for current environmental and safety performance data for Chalk River Laboratories. As part of the CNSC's regulatory requirements, major licensees must have robust public information and disclosure programs in place. To obtain more information, visit CNL's website.

The Chalk River from which the village takes its name , probably owes its name to the Perlie Lumbering Company which was established around on the banks of the lake where Chalk Bay meets Sturgeon Lake.

The water flows from Corry Lake into the Chalk River, into Sturgeon Lake and eventually into the Ottawa River providing a natural water route for transportation of material into and out of this region.

This was an ideal location for the lumber company as the river served a large timbering area. It provided easy transportation for cut timbers from as far south as Tucker Creek and as far west as the head of Corry Lake, for eventual hewing at Perlie Mill, or hewing site.

The gradual downward slope of the area's terrain also permitted the use of horse and sleigh in the timber transportation, both to the banks of the Chalk River and directly overland to the hewing or mill site. As shown in the accompanying photographs, the broad axe, unlike our axes of today has a very broad 8 to 10 inch cutting edge and is sharpened only from one side. The sharpened edge allows for easy cutting into the log while the flat side resulted in a flat or square cut on the log.

Much like today's hockey sticks , the broad axe handle was set into the axe head with either a slight angular inclination to the left or the right to facilitate left or right handed choppers. Compared to today's axes, the heavier broad axes provided more driving force into the chopping action.

The men who were responsible for the hewing squaring of the logs could not always rely on their keen eye for maintaining a straight cut, and relied heavily on a straight chalk like marking on the bark of the log for guidance.

The chalk like substance used to mark the logs was obtained from the char of burnt alder or poplar sticks. The hewers rubbed this substance , sometimes called "Black Stick" or "Chalk" against a string line and used the line much like today's carpenters use a chalk line.

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Regulatory hearing will consider application to construct Near Surface Disposal Facility; Indigenous communities and members of the public are invited The site was later incorporated as AECL. This was the first controlled nuclear chain reaction outside of the United States. The NRX research reactor comes online and generates the highest neutron flux in the world.

NRX was a multipurpose research reactor used to develop new isotopes, test materials and fuels including the first uranium oxide fuels which became the international standard , and produce neutron radiation beams for research. NRX went offline in In the 's Dr. Bertram Brockhouse begins neutron beam research in the NRX reactor. This work won Brockhouse the Nobel Prize in Physics in AECL produced the radioisotope Cobalt This materials, still used today, which was first used for cancer treatment through work by two separate teams in London ON and Saskatoon SK.

NRX suffers a major accident but is rebuilt and restarted within 14 months. This is also the first reactor in the world to refuel online. The NRU is a multi-mission facility, used to develop radioisotopes, test materials and fuels, and produce neutron radiation beams for research.



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