The Human Impacts Database

A collection of useful numbers for quantifying the impacts of the human presence on Earth.

Average mining efficiency of coal


This quantity comes from a time series measurement and the most recent value (2015) is reported.


This is equivalent to...

≈ 8.37 t of waste / t of coal

HuID: 39407
Relevant Year(s): 2015
Summary: The global average mass (tonnes) of overburden/waste sediment moved per tonne of coal harvested in 2015. This ratio is termed the "stripping ratio" of coal and varies depending on how the coal mined.
Method: This is a calculated quantity given commodity-level stripping ratios and the globally reported mass of coal mined by type.
Source: Cooper, A. H., Brown, T. J., Price, S. J., Ford, J. R., Waters, C. N. Humans are the most significant global geomorphological driving force of the 21st century. The Anthropocene Review (2018)
Dataset: Stripping ratio of coal 1925 — 2015 (Cooper2018_coal_stripping_ratio.csv)
global resolution
Original Data License: © The Authors
Added By: gchure