Industrial auctioneers IronPlanet has beaten its sales record for the most expensive machine, by selling a Marion 7820 Walking
Dragline for $3m.
Just as Spider-Man uses his web to swoop between New York City's skyscrapers, spiders use a
dragline to get around and nab prey.
Redundant buckets from the massive
dragline excavators which once chewed up the local countryside to help meet Britain''s energy needs are being given a new lease of life as pieces of industrial artwork.
Total quantity of
dragline silk did not differ significantly by sex or the presence of prey cues (Repeated Measures ANOVA: Sex = [F.sub.1,34] = 1.453 ; P = 0.2346 ; Prey Cue = [F.sub.1,34] = 0.856 ; P = 0.3506 ; Prey Cue * Sex = [F.sub.1,34] = 0.713; P = 0.4045; n = 36; Fig.
Dragline silk, the stiff, non-sticky strands used to frame the web, is the strongest of all.
PROPERTY VALUES When researchers talk about mimicking spider-silk production, they are usually referring to
dragline silk.
Big Geordie is officially known as a BE 1550W ( a walking
dragline excavator.
AUSTRALIA'S Cooperative Research Centre for Mining has invented a
Dragline Dutymeter, which can help raise the operational capacity of a
dragline by up to 25 per cent.