State and federal authorities met Thursday with workers of San Felipe Frisco mine in order to stop the intermittent blockades of the highway.
Workers have been protesting for several days in demand of better working conditions.
Negotiations started Friday in Mexico City among officials, workers and the employer.
Workers previously told media outlets the company apparently cut energy services and stopped providing potable water.
The over 170 workers have been housed in mobile homes. According to media reports the company has also stopped giving meals, which has forced protestors to spend in their own food. Frisco is owned by Carlos Slim, one of the wealthiest businessmen in Mexico and the world.