---
schema_version: "secwatch.filing_event.v1"
accession: "0001493152-21-027496"
form_type: "8-K"
ticker: "BHLL"
cik: "0001407583"
company_name: "Bunker Hill Mining Corp."
filed_at: "2021-11-08T23:59:59+00:00"
generated_at: "2026-06-28T11:22:26.941856+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Bunker Hill reports updated PEA with $143M NPV, 35% IRR; aims for construction decision by Q1 2022

## Summary
- Updated PEA shows $143M NPV (42% increase), 35% IRR, 2.6-year payback, $25M annual FCF at $1.15/lb Zn, $0.90/lb Pb, $20/oz Ag.
- Company advancing engineering studies to support a construction decision by end of Q1 2022.
- MineTech leading mine design; Golder for geotechnical assessments; metallurgical test work results expected Q1 2022.
- Commercial discussions for process plant acquisition expected to conclude by end of 2021.
- Water treatment system engineering to reach 60% completion in November 2021.

## SEC filing metadata
- accession: 0001493152-21-027496
- form_type: 8-K
- ticker: BHLL
- cik: 0001407583
- company_name: Bunker Hill Mining Corp.
- filed_at: 2021-11-08T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1407583/000149315221027496/0001493152-21-027496-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1407583/000149315221027496/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493152-21-027496
- JSON: https://secwatch.observer/filing/0001493152-21-027496.json
- Plain text: https://secwatch.observer/filing/0001493152-21-027496.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.