Accident Rate:
Result obtained by multiplying the number of lost-time accidents recorded in a certain period of time by 100, and dividing by the
number of personnel in the same period.

Gray Portland Cement:
A hydraulic binding agent with a composition by weight of at least 95% clinker and 0-5% of a minor component (usually calcium sulfate).
It can set and harden under water and, when mixed with aggregates and water, produces concrete or mortar.

Clinker:
An intermediate cement product. Limestone, clay and iron oxide are sintered in a kiln at around 1,450 degrees Celsius to produce clinker. One metric ton of clinker is approximately 1.1 metric tons of gray Portland cement.

Kilocalorie (kcal):
A calorie is a unit of energy defined as the amount of heat necessary to raise the temperature of a gram of water at normal pressure from 14.5°C to 15.5°C. A kilocalorie is a thousand calories.

Eccoefficiency:
Efforts to optimize energy and raw material efficiency to produce an economic and ecological benefit derived from a reduction of environmental impact.

Metric Ton:
The equivalent of 1.102 short tons.

Sustainable Development:
A balanced development of economic growth, social equity, and sustainable use of natural resources, for the purpose of satisfying present needs without compromising those of future generations.

Ecosystem:
A system formed by the interaction of a community of organisms with their physical environment.

Emissions:
Materials that enter the air and water currents, noise, vibrations, light, heat, rays, and similar phenomena generated by productive processes or installations and services.