surface lift

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surface lift

[′sər·fəs ‚lift]
(mining engineering)
In the freezing method of shaft sinking, freezing and heaving of the surface around the shaft due to the formation of ice and the variation of temperature.
References in periodicals archive ?
The accident happened at the start of the day on the Hochwurzen drag lift when warm weather made the snow on the path of the lift difficult to negotiate.
ALPE D'HUEZ has 700 snow canons and 86 ski lifts (6 cablecars, 9 gondolas, 23 chair lifts, 48 drag lifts)108 protected runs: 39 green, 30 blue, 26 red, 13 black.
There are also four drag lifts servicing the nursery and intermediate slopes with many of the facilities one would typically find in a European resort.
Tom confirmed this lack of drag lifts is also a plus for boarders.
With some basic lessons in the bag, we headed for the drag lifts, soon following Petar in a gentle slalom.
We progressed fast, using drag lifts and proper chair lifts, to higher mountain regions.
The European Commission is taking Germany, Greece, Ireland and Italy to the European Court of Justice for failure to notify measures transposing Directive 2000/9/EC on cableway installations (funicular railways, cable cars, chair-lifts and drag lifts), designed to carry persons, into their national laws.
"Some of the concerns had, however, been substantiated, such as an allegation that staff had 'drag lifted' a person," the report said.
There are two drag lifts serving the main slope and a moving carpet next to the beginners' area.
The Directive lays down health and safety, environmental protection and consumer protection requirements for the design, construction and entry into service of cableway installations such as funicular railways, cable cars, chair-lifts, drag lifts, etc.