Soluble Metal Xanthates and their Effect on Differential Flotation

It is generally conceded by flotation men that the condition at the surface of a particle of mineral or gangue is the most important factor controlling its behaviour in a flotation cell. Much research work has been devoted to the study of the forces that are active at the surface of the particle and of … Read more


In the examination of an undeveloped prospect a decision must be arrived at from an inspection of the outcrops and the exposures in a few shallow pits. Prospects that are offered for sale rarely expose any important quantity of good ore, work having usually been stopped when the immediate exploration no longer yielded favorable results. … Read more

Diamond Drilling

In approaching the subject of diamond-drilling practice, a brief history of the origin and development of the diamond drill may be of interest. The use of black diamonds for boring holes in rock was discovered in 1863 by Rudolph Leschot, a French engineer. In 1864, he employed a diamond bit to bore holes for blasting … Read more


Frequently the careful engineer puts the word porphyry in quotation marks or precedes it with “so-called,” when he writes of the Porphyry Copper mines. This is done by way of serving notice that he is aware that the term is not a precise one, though no one who is informed on the subject would in … Read more

Metallurgy Problems

While reflecting on the subject of my present paper, I soon realized that it would be very difficult to say something really new about any special aspects of metallurgy. In consideration of the excellent scientific work that has been done in the United States in connection with almost all the fundamental questions that are of … Read more

Understanding the 5 Water Sources – Know your Water

Identifying a water source is the first step in water filtration, understanding the source allows us to break it into categories. Here are the main five water sources: Municipal Ground water (well) Surface water Lake River Stream (creek) Shallow well Rainwater Seawater Municipal supply: This can be confusing for some, the city of Los Angeles … Read more

Water in Mining

Why Mining needs Water & How is Water Used Water plays an important role in most mining and extractive processes. Understanding the main uses of water, the quantity and quality of water that arc required for each use, and the water losses associated with each use are the first steps in making decisions on how … Read more

We’re in Compliance, but the Fishes are Dead

The Water Diaries STORY 1: BIGASS COMPANY IS IN COMPLIANCE, BUT THE FISH ARE DEAD Background BAM (BigAss Mine) completed construction in the early 00’s and started mining and processing. BAM is located somewhere south or east of the border. Maybe South America, maybe Siberia, definitely not Australia, good blokes there, eh. The BigAss Mine … Read more

How to Read a Water Report

Here is the importance of understanding your water report, this applies to well water, lake water and of course city water quality report. You don’t need a science degree to understand the principles of a water report, start by narrowing it down to the main objective. Today we’ll focus on how to read a well … Read more

Mining Company Stops Killing Fishes

Background: As we learned in Part 1, Bigass Mining (BAM) Company had just finished construction and had started mining and milling operations. The BAM tailings management facility (TMF) was designed as a non-discharge facility but was discharging. The TMF had odor, foam issues at the discharge point and the receiving water stream that happened to … Read more