Here's what you likely mean and the correct units:
* Tons: This is the most common unit for measuring coal. A ton is a unit of weight (usually 2,000 pounds in the US). The amount of coal in tons depends on the specific mine or source.
* Tonne: This is a metric unit of weight equal to 1,000 kilograms. It's also commonly used for measuring coal.
To know how much coal is available in a specific location, you need more information, such as:
* The mine or source: Coal production varies greatly depending on the mine.
* The type of coal: Different types of coal have different densities and energy content.
* The time period: Coal production changes over time.
Let me know if you have more specific questions about coal production or measurement.
