Final answer:
Construction workers, including trenching and excavation workers, face risks and accidents that can lead to fatalities. Employers need to prioritize worker safety through proper safety procedures and training.
Step-by-step explanation:
The question refers to the number of workers who were killed in trenching and excavations from 2000-2006. Unfortunately, the given information does not provide specific data for this time period. However, it is important to note that construction laborers often work in hazardous conditions, including trenches and excavation sites, which can pose risks to their safety. To prevent accidents and fatalities, it is crucial for employers to adhere to proper safety procedures and provide workers with appropriate training and protective equipment.