That one-minute video shows you how the Highway 99 tunneling machine’s repaired front end was lowered into the pit where the rest of the machine awaited. WSDOT just made it public along with this update on what’s happened since then, and what’s next:

Seattle Tunnel Partners has reconnected the SR 99 tunneling machine’s 2,000-ton front end to the section that remained in the access pit during repairs. With the two sections of the machine now bolted together, crews from Mammoet have unhooked the front-end piece from the massive red crane that performed this week’s lift.

Significant work remains for crews tasked with reassembling the machine. Three large pieces of the machine’s outer shield will be lowered into place for reassembly in the coming days, according to STP’s most recent schedule. Crews also must weld the pieces back together, in addition to the lengthy task of reconnecting the hundreds of wires and hoses that are integral to the tunneling operation. STP and manufacturer Hitachi Zosen will conduct a series of tests following reassembly to ensure the machine is ready to resume mining.

WSDOT has said its contractor’s most-recent schedule anticipates that could happen in November.