"Groundbreaking, also known as cutting, sod-cutting, turning the first sod or a sod-turning ceremony, is a traditional ceremony in many cultures that celebrates the first day ...
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of construction for a building or other project. Such ceremonies are often attended by dignitaries such as politicians and businessmen. The actual shovel used during the groundbreaking is often a special ceremonial shovel, sometimes colored gold, meant to be saved for subsequent display and may be engraved. In other groundbreaking ceremonies, a bulldozer is used instead of a shovel to mark the first day of construction. In some groundbreaking ceremonies, both the shovel and the bulldozer are used to mark the first day of construction." - (en.wikipedia.org 27.10.2021)