Reletter
Artwork for Geoffrey P. Cruickshank

Geoffrey P. Cruickshank

Energy and security professional, interested in propulsion systems (gas turbines, power generation, MethaLox rocket engines, Tic-Tacs that can produce 1100 GW of power in 0.78 seconds...) Based in Darwin, Northern Territory, Australia

Platform
Substack
PricingOnly free issuesPublishesTwice weekly
Issues33Founded9 months agoLast Issue8 days ago
Active

Read this Newsletter

geoffcruickshank.substack.com
Artwork for Geoffrey P. Cruickshank

Latest Issues

While you are waiting for the next Department of War UFO release, check out the original source of the NASA Space Shuttle footage - Canadian UFO research pioneer Martyn Stubbs

In the years before Cisco Systems introduced their Internet Routing in Space (IRIS) technology in 2010, in which space-radiation hardened routers were installed on the satellite bus to switch data across transponders - satellites typically...

8 days ago
15
2

DoW UFO Release: Official report of Atlas missile failure modes has different findings compared to the post-flight report of Bob Jacobs' Big Sur missile flight he filmed being destroyed by a UFO

The following document was included in the Department of War UFO release of May 8, 2026, for reasons that were not initially understood:

https://www.war.gov/UFO/#DOW-UAP-D048-Department-of-the-Air-Force-Report-1996

However, looking at the...

9 days ago
12
2

The July 7, 1947 Shreveport "Disc": The FBI knew it was a hoax by July 10 - Why would Hoover complain about it 5 days later to Gen. Schulgen?

Debunkers have long claimed that the memo written by FBI Director J. Edgar Hoover on July 15, 1947, in response to news from the US Army Air Corps Intelligence regarding the recovered disc from Roswell, is merely referring to a practical jo...

9 days ago
7

July 15, 1947: FBI Director Hoover writes a memo to the US Army Air Corps Intelligence, complaining "THIS TIME, SHARE THE DISC." He is referring to the Roswell Crash.

I’ve not heard of this one before, but fellow researcher Ryan Purkey certainly has.

A document from the Department of War release shows FBI Director J. Edgar Hoover on July 15, 1947, agreeing to cooperate with Brigadier General George F. S...

10 days ago
21
4

DoW UFO files: Keep an eye out for a CIA Office of Scientific Intelligence report titled “Analysis of the Corona and Oscura Peak, New Mexico Wreckage of Unidentified Lenticular Aerodyne Technology"

When sifting through the recent Department of War UFO files, please keep an eye out for anything related to the CIA’s Office of Scientific Intelligence files. We know about the 1955 UFO Digest report CIA/SI 28-55, but there is another file...

11 days ago
18
5

Key Facts

Contact Information
Newsletter Author
Number of Subscribers
Find out how many people subscribe to this newsletter.

Audience Metrics

Subscribers, engagement, traffic and sponsorship for Geoffrey P. Cruickshank.

SubscribersEngagement78Monthly Web Visits
Accepts SponsorsEstimated Cost per Ad

Authors

The writers behind this newsletter.

  • Geoffrey P. Cruickshank

    Energy and security professional. Darwin, Northern Territory, Australia

  • Frequently Asked Questions

    How can I access the email archive for Geoffrey P. Cruickshank?

    You can find recent issues that have been published by Geoffrey P. Cruickshank on Reletter by scrolling up to where it says Latest Issues. Tap on the link for any of the most recent emails or hit More Issues to see older ones.

    How many subscribers does Geoffrey P. Cruickshank have?

    To see how many people subscribe to Geoffrey P. Cruickshank, simply upgrade your Reletter account. We provide readership numbers and lots of other stats for this newsletter so you can decide if it's worth reaching out to.

    How can I advertise in Geoffrey P. Cruickshank?

    Newsletter advertising can be extremely effective when it's done right. Before you pitch Geoffrey P. Cruickshank as a potential sponsor or partner, make sure that you've done your research and checked its newsletter stats with Reletter.

    Then, personalize one of our winning pitching templates and send it to the right person using the contact info provided.

    How much does it cost to sponsor a publication like Geoffrey P. Cruickshank?

    Newsletter ad rates (or CPM) vary depending on many factors, including industry, number of subscribers, open rate, ad placement and more.

    To find out how much an ad will cost, contact Geoffrey P. Cruickshank using the contact information provided and ask for a copy of their media kit.

    How can I find newsletters related to Geoffrey P. Cruickshank?

    Scroll up to where it says Related Newsletters to see other publications like Geoffrey P. Cruickshank. You can also search our email newsletter directory to discover other newsletters that cover the topics you're interested in.

    How do I contact Geoffrey P. Cruickshank?

    Reletter provides this newsletter's website URL above, where you will often find their contact information. We also provide links to associated social media accounts and pitching templates so you can reach out fast.