February 12th, 2013; By Canadian Centre for Occupational Health and Safety
Each and every worker in Canada has three rights… 1. The Right to Know 2. The Right to Participate 3. The Right to Refuse Dangerous Work The Right to Know […]
The helicopter was invented by the Chinese in the 4th century, more than a 1,000 years before Leonardo da Vinci. It was called the Bamboo Dragonfly and could fly 25 feet (7.6 m) up and down. The first modern helicopter was invented by the French.