Assertion: crampon's point | /r/HasProperty | added in 1930
Facets:
Source sentences:
text: In the 1930s, two additional forward-slanting points were added, giving us the design we enjoy to this day and but eradicating the need for chopping steps.
text: In the 1930s two additional forward-slanting points were added, making them exceptional for mountaineering and glacier travel and beginning a revolution in front pointing.
text: In the 1930s, two additional forward-slanting points were added, thus creating today's 12-point crampons.