Aleph search

Aleph lets you search over 2 million public domain documents filed by oil & gas and mining companies to financial regulars around the world. All documents are indexed and searchable. You can register and create email alerts to follow specific search queries, and import document sources. Our experts are ready to advice you and discuss how you can integrate Aleph in your work.

Learn more ...

Document Sources

US Filings (EDGAR)
Canadian Corporate Filings
Australian Stock Exchange
Bombay Stock Exchange
London Stock Exchange
Johannesburg Exchange
OpenOil Contracts
EITI reports


Mailing List

Subscribe to our Mailing List and stay up to date

Featured Video

Concession Maps

Each area is the co-ordinates of an oil or mining project. Those highlighted lead through to relevant entries in our databases on contracts, concessions, production, reserves, costs and corporate groups involved. All data come from relatively authoritative sources: government or the companies.

Financial Modeling Program

Open financial models are the natural next stage of extractives governance. We are running a free mentoring program to develop financial models of upstream oil, gas and mining projects, with the aim of creating a worldwide network of practitioners from civil society, government or private sector. Interested? Contact us!

Corporate Mapping

OpenOil is developing open data systems around corporate relations in the oil, gas and mining industries. Using interoperable data formats, clear editorial standards, and drawing on public domain data, OpenOil creates network graphs of companies, executives, assets, and the relationships between all of them.

Recent Blog Posts (Read all Posts)

Where are your country’s oil projects on the “Climate Change Supply Curve”?

on June 21, 2017 · Leave a Comment 

The latest report from Carbon Tracker Initiative, a non-profit analysis house in London, suggest that up to a third of currently planned oil and gas projects may now never go ahead because of climate change policy. In “2D of Separation”, CTI presents the potential risks to shareholders and investors in the world’s largest fossil fuel more »

Reputable Mining Investors Wanted in Sierra Leone: How to Improve Integrity Due Diligence in Mining License Management

on April 11, 2017 · Leave a Comment 

On the first anniversary of the Panama Papers, the National Minerals Agency (NMA) of Sierra Leone wants to know who they are doing business with. The NMA is the government agency responsible for issuing mining licenses. Beny Steinmetz of Simandou fame, is one such mining investor who has prompted the NMA to strengthen integrity due more »

Is Tanzania’s export ban a high stakes game of poker with Acacia?

on March 31, 2017 · Leave a Comment 

OpenOil’s Excel model on the Bulyanhulu mine  is available to view the workings of the conclusions in this post.  Tanzania’s decision to impose a ban on concentrate exports from its mining industry has gained wide coverage among industry watchers. The question is: what does the government hope to achieve with it, and what will companies’ more »

Recent Twitter Posts (Follow us @open_oil)

OpenOil @Open_Oil
RT @ali_readhead: Today we launch a Toolkit 4 Transfer Pricing Risk Assessment in #Mining to 38 African #tax agencies #ICTA2017 @ATAFtax @g
OpenOil @Open_Oil
RT @dianakaissy: How transparent and accountable is the legislative framework surrounding the oil and gas sector in Lebanon? Check... https…
OpenOil @Open_Oil
Check our database of two million #oil & #mining records and research extractive projects, company ownership & more…