Mining Techniques used at Britannia
An overview of the drilling, blasting, and rock movement methods used within the Mine.
Anaconda Company - Britannia Operations
This undated document summarizes the operations of the Mine, including its history, extraction methods, milling process, laundering (copper precipitation), Jane Basin Project, geological research and hydro power.
The Concentrating Process
This document provides an overview of how the valuable metal-bearing minerals were separated from the rock.
A detailed look at The Concentrating Process
This document prepared by Museum staff provides a more detailed look at how the valuable metal-bearing minerals were separated from the rock.
Concentration of Britannia Ores, H A Pearse – transcribed from original document
This document from 1927 was originally published in Transactions of the Canadian Institute of Mining and Metallurgy. It provides an in-depth explanation of the mineral separation process including challenges, mill operations and mill performance.
Gold Recovery at Britannia – transcribed from original document
This document from September 1930 describes how gold was recovered as part of the Milling process.
Mill Flowchart, 1929 - transcribed from original document
Over the years, the milling process was changed several times to accommodate new technology and improve mineral recovery rates. This document provides the methods in use in 1929.
Copper Sulphate Plant - transcribed from original document
Copper sulphate was used at Britannia to aid in the recovery of sphalerite (zinc sulphide) in the flotation process in the Mill. It proved more economical to produce copper sulphate at Britannia than to ship it in. This source document from 1949 explains how copper recovered from the Mine’s waters was used to produce it.
Steel Ball Manufacture - transcribed from original document
In 1931, 2.5 pounds of steel btlls were consumed by the milling process for every tonne of ore milled. That equates to thousands of balls per day. To meet this need, the Mine produced steel balls on site out of scrap metal to reduce costs. This source document explains how scrap metal was recycled into steel balls.
Britannia had copper in its water. As Britannia was a copper mine, the Company installed a method to recover the copper from the water. This method, called copper laundering, became a significant part of Britannia’s copper production. This document, prepared by Museum staff, explains why there is copper in the water, how the Mine got it out, and what is being done today to remove the copper.