What Does Heavy Industry Mean?

What Does Heavy Industry Mean?Relates to a type of business that typically carries a high capital cost (capital-intensive), high barriers to entry and low transportability. The term "heavy" refers to the fact that the items produced by "heavy industry" used to be products such as iron, coal, oil, ships, etc. Today the reference also refers industries that cause disruption to the environment in the form of pollution, deforestation, etc.