pac.dog pac.dog / Lobbying

1st Quarter - Report · 2026

Filing UUID
89b0a558-dace-4950-8d4a-f060570a350c
Type
Q1 — 1st Quarter - Report
Period
first_quarter
Year
2026
Posted
2026-04-15 12:23:30
Income (reported)
$40,000
Expenses (reported)
—
Filing document
Open on lda.senate.gov

Registrant (lobbying firm)

MERCURY PUBLIC AFFAIRS, LLC

lobbying

Contact
ADINA MINCHER
Phone
+1 518-810-2468
Address
zip:20036, city:Washington, state:DC, street:1130 Connecticut Ave NW Suite 475

Client

JEFFER MANGELS BUTLER & MITCHELL LLP OBO DATELINE RESOURCES LIMITED

Mining, Quarrying and Oil & Gas Extraction

State
CA
Country
US
Effective date
2025-08-12

Issues lobbied + lobbyists

NAT — Natural Resources

issues related to rare earth elements

Lobbyists: BRYAN LANZA; PATRICK COSTELLO (covered position: 2005 - 2008 (Congressman Jon Porter))

Government entities lobbied: Defense, Dept of (DOD); Interior, Dept of (DOI); Natl Economic Council (NEC)

pac.dog is a free, independent, non-partisan research tool. Every candidate, committee, bill, vote, member, and nonprofit on this site is mirrored from primary U.S. government sources (FEC, congress.gov, govinfo.gov, IRS) and each state's Secretary of State / election commission — no third-party data vendors, no paywall, no editorial intermediation. Citations to the originating source are on every detail page.

Estimated value: $180/mo per user — but we made it free.