Mining ventilation is a significant safety concern for many miners.

Such fans were used extensively for mine ventilation throughout Britain.

As a result of his work with the mining industry, Robinson became a major authority on mine ventilation.

A. One way they handled that was to have a meeting, let's say, on revising the mine ventilation standards.

Mine ventilation systems normally keep it below explosive concentrations.

Angus had gotten mine ventilation fans into the old base and they'd found salt for filters of air.

In deep hot mines ventilation is also required for cooling the workplace for miners.

It is widely used in the mine ventilation industry but is rarely referred to outside of it.

They used Underground mine ventilation raises and further shafts which had been provided with ladders due to safety regulations.

His specific area of expertise was mine ventilation and for which his expertise was much in demand around the world.

It was introduced by John J Atkinson in an early mathematical treatment of mine ventilation (1862) and has been known under his name ever since.

The practicalities of mine ventilation led Atkinson to group some of these variables into one all-encompassing term:

Mine safety officials, who accused the company of interfering with mine ventilation, said they had imposed the maximum $55,000 penalty for seven of the eight violations.

Firstly underground mine ventilation in some districts of Dennis were probably inadequate, in particular, the 14's and 29's districts were notorious for poor air quality.

While Bobby is sleeping in a mine ventilation shaft before the rescue attempt, Figgis had stolen a flashlight from Bobby's bag.

The unit is named after J J Atkinson, who published one of the earliest comprehensive mathematical treatments of mine ventilation.

Violations include failure to follow the approved roof control and mine ventilation plans and problems concerning emergency escapeways and required pre-shift safety examinations.

Other factors affecting methane liberation include whether the mine ventilation system is exhausting (negative pressure) or blowing (positive pressure), and the operating pressures of the fans.

"Ventilation team, stand by," said Robert, and glanced over his shoulder to make sure the three assigned to carry the heavy mine ventilation fans were there and ready.

Concentrations of methane in mine ventilation exhaust air of coal and trona mines are very dilute; typically below 1% and often below 0.5%.

Before modern mine ventilation techniques, methane was considered a hazard for miners, as it could lead to suffocation and was extremely flammable in combination with coal dust.

The decline in the percentage of applicants approved is attributable in part to better mine ventilation, say the Mine Safety and Health Administration and coal companies.

Atkinson resistance is commonly used in mine ventilation to characterise the resistance to airflow of a duct of irregular size and shape, such as a mine roadway.

Still another illusion cherished by the coal men was that careless miners and Irish revolutionaries were the source of the mine disasters, rather than their own refusal to provide adequate mine ventilation.

Most suppliers quote resistances of flexible temporary ventilation ducts in gauls/100 m and in most mine ventilation software programs, branch resistances are given in gauls.