Barber Lake estimate-at-completion
Company: Cipher Mining
The claim, verbatim
Barber Lake's estimated all-in development cost at completion is $2,941-2,966MM, against an original budget of $2,157MM.
Source (primary)
cipher-mining 8-K exhibit (d134900dex991.htm) (SEC EDGAR (8-K Ex), press_release)
View cached copy (2026-10-14)Live source ↗
Quote: “$2,941 - 2,966”
How we checked this
Checked on October 16, 2026. The cited source supports every part of this claim.
The cost waterfall runs from a $2,157 original budget to an illustrative EAC of $2,941-2,966. The footnote defines EAC as the current estimated all-in development cost.
Confirmed in the source:
- Barber Lake's estimate-at-completion (current estimated all-in development cost) is $2,941-2,966MM
- Barber Lake's original budget was $2,157MM
What we did: Read our cached copy of SEC EDGAR (8-K Ex) (https://www.sec.gov/Archives/edgar/data/1819989/000119312526419743/d134900dex991.htm) in full (17,922 characters, retrieved October 14, 2026) and checked each assertion in the claim against it.
Additional evidence
confirms cipher-mining 8-K exhibit (d134900dex991.htm)
Quote: “$2,941 - 2,966”