Annual data on coal mine productivity measured in short tons per labor hour, organized by mine type categories including total, surface, underground, and refuse. The dataset is provided by the U.S. Department of Energy via an API requiring registration. It was last updated in July 2021.
Use Cases
Analyze productivity trends in short tons per labor hour across surface and underground mine types over time.
Compare annual productivity metrics between total, refuse, and specific mine type categories.
Model the relationship between mine type and reported short tons per labor hour productivity figures.
Strengths
Data is organized by four distinct mine type categories (total, surface, underground, refuse).
Provided by the authoritative U.S. Department of Energy.
Annual time series data allows for tracking long-term productivity trends.
Limitations
The dataset's last update was in July 2021, making it potentially stale for current analysis.
Specific data volume, such as row count or time range, is not disclosed.
Access requires an API key from a specific registration form, adding a step to data acquisition.
Provenance
Source
U.S. Department of Energy
Collection Method
Provided via an EIA API requiring user registration.
Time Range
Annual data, specific years not provided.
Freshness
Annual; last updated 2021-07-06.
Users must obtain an API key via a registration form (http://www.eia.gov/beta/api/register.cfm) to access the data. The license is listed as 'other-pd'.