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== Construction ==

== Construction ==

The novel gives no details of the actual construction of the Taggart Tunnel. It says only that it was built through the determined effort of Nathaniel Taggart, founder and first President of the [[Taggart Transcontinental Railroad]], and that the tunnel was eight miles in length.

The novel gives no details of the actual construction of the Taggart Tunnel. It says only that it was built through the determined effort of Nathaniel Taggart's grandson, who was then President of the [[Taggart Transcontinental Railroad]], and that the tunnel was eight miles in length.

It carried a ventilation system to remove [[locomotive]] exhaust fumes, but was still regarded as safe only for the passage of a train pulled by a [[Diesel]]-electric [[locomotive]]. For that reason, while [[Dagny Taggart]] was in charge of operations at Taggart Transcontinental, she observed a strict rule always to keep a Diesel engine on standby in Winston, Colorado, to pull any train that arrived at either portal of the tunnel without its engine.

It carried a ventilation system to remove [[locomotive]] exhaust fumes, but was still regarded as safe only for the passage of a train pulled by a [[Diesel]]-electric [[locomotive]]. For that reason, while [[Dagny Taggart]] was in charge of operations at Taggart Transcontinental, she observed a strict rule always to keep a Diesel engine on standby in Winston, Colorado, to pull any train that arrived at either portal of the tunnel without its engine.