The property is just west of the Ikea store construction site. Workers are building new access roads to the grain silo to replace current entrances from Duncan and to ease traffic congestion once the store opens next year.

A set of scattered human bones found inside the vault were removed about 2:30 p.m. Thursday. Workers from Calvary Cemetery boxed them up and plan to rebury them in a section of Calvary that holds the remains of more than 100 people also from the former Rock Springs Cemetery.

Graves have been moved at least a half-dozen times since the mid-1800s, but the bulk were moved at the turn of the 20th century, said Gabe Jones, a spokesman for the St. Louis Archdiocese. Jones said it was not likely that the remains removed Thursday would be identifiable.

“There are no records to speak of from that far back,” he said.

Dennis Lower, president of Cortex, the district developing the site that includes Ikea, said S.M. Wilson would bring ground sonar equipment to the site along Sarah this week to check for more potential grave sites as workers continue clearing dirt for the new entrances along Sarah.