https://arstechnica.com/tech-policy/2025/02/centurylink-nightmares-users-keep-asking-ars-for-help-with-multi-month-outages/
"He said that in the mountains of western Boulder County, there are a total of five techs who know how to work with copper wire," John told us. "All the other employees only work with fiber. CenturyLink is losing the people familiar with copper and not replacing them, even though copper is what the west half of the county depends on."