The featured image above shows a staggering number of barrels at the Guinness Brewery in Dublin! 
This very short article results from some recent reading about the railways on the Guinness Brewery site in Dublin.
- An article in ‘Narrow Gauge & Industrial Railway Modelling Review’ Issue 60 Volume 8, October 2004, p134-142;  and
- Paul Webb, ‘Shifting the Stout’, The Moseley Trust, Apedale, Newcastle-under-Lyme, Staffordshire. 
The Brewery in St James’s Gate, Dublin was founded by Arthur Guinness in 1759, one of dozens based on the pure water available from the River Liffey. Guinness outlasted and outgrew all its competitors to become one of the greatest brewing empires in the world.
Between 1868 and 1886 Guinness spent over £1 million on capital projects. As part of these developments, two rail systems were created within the expanded brewery site. I have covered these in some depth in an earlier article about the brewery railways. ….
Instrumental in much of the development of the brewery site was Samuel Geoghegan who was Engineer to the Brewery.
The article in Narrow Gauge & Industrial Railway Modelling Review is archive material, courtesy of ‘Engineering’ magazine and the Greenwich & District NGRS. It consists primarily of a transcript of an illustrated presentation by Samuel Geoghegan which was carried by ‘Engineering’ Magazine in September and October 1888. It includes detailed drawings, engravings and photographs. Back copies of the magazine are available from Roy C. Link, Cambrian Forge, Garndolbenmaen, Gwynedd, LL51 9RX.
Paul Webb’s book is an A4 no-frills publication in basic green card cover and printed on standard copier paper but it contains a wealth of illustrations and detailed text about the Brewery and the various forms of transport, road, rail and water, that served it. Well worth the £8.50 plus postage that it cost, especially knowing that any profit from the sale supports the Moseley Railway Trust.
There are also some excellent YouTube offerings which focus on the brewery and the different modes of transport it employed. …. For example: 
- Samuel Geohegan; Tramways and Rolling Stock at Guinness’s Brewery; Narrow Gauge & Industrial Railway Modelling Review, Issue 60 Volume 8, October 2004, p134-142 (https://narrowgaugeandindustrial.co.uk, accessed on 22nd July 2020.)
- Paul Webb, Shifting the Stout; The Moseley Trust, Apedale, Newcastle-under-Lyme, Staffordshire. (https://avlr.org.uk/moseley-railway-trust, accessed on 22nd July 2020.)
- This image is available from a variety of online sources including: https://www.lizcovart.com/blog/guinness-storehouse?format=amp, accessed on 22nd July 2020; https://www.pinterest.co.uk/pin/323133341987983419/?%24ios_deeplink_path=pinterest%3A%2F%2Fpin%2F323133341987983419&%24android_deeplink_path=pinterest%3A%2F%2Fpin%2F323133341987983419&_client_id=amp-q7GRAwBYyhpqAMkTd7nxbg&utm_source=168&utm_medium=2160¤t_page_url=https%3A%2F%2Fwww.pinterest.co.uk%2Famp%2Fpin%2F323133341987983419%2F&install_id=ac61f0899ae3492288c7cff241bd5a0c&%24fallback_url=https%3A%2F%2Fwww.pinterest.co.uk%2Fpin%2F323133341987983419%2F%23details&_url=https%3A%2F%2Fwww.pinterest.co.uk%2Famp%2Fpin%2F323133341987983419%2F&_branch_match_id=814525083296268811#details, accessed on 22nd July 2020
- https://youtu.be/Dacn58a1x5s, accessed on 22nd July 2020.
Another very interesting book on the Guinness railway system: https://www.amazon.co.uk/Irelands-Largest-Industrial-Railway-Guinness/dp/1840337907
Enjoyed seeing the bardges making their way from the brewery to the port as I travelled in the bus alonside the Liffey during my secondary school years late 50s – mid 60s.