
These were used as a brake for the mine tubs. Miners would throw this into the wheel spokes to stop the tubs - a very dangerous occupation if you liked to keep all your fingers! Sometimes a wooden shaft could be used but this all-metal sprag provided a better grip. Source: Objaverse 1.0 / Sketchfab
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 0 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
