April 1878 - Mr W. E. Jackson and Mr. John Thompson travel from the North East to visit the works of the Penarth Company and claim £55-6s-0d expenses. Their stay is at the Royal Hotel in St. Mary Street, Cardiff which costs £17-18s.0d. (expenses, hotel + travel equates to approx. £8,640 in 2019).

Mr John Thompson is paid for consultancy and design services at the rate of £100-0s-0d (approx. £11,805 in 2019) per month over the duration of the contract whereas construction contracting services are undertaken against Mr. Jackson's Tender.

The Cost Book of W. E. Jackson (contractor) enables us to establish the names of both local and national suppliers who contributed labour, expertise, construction equipment and materials, etc. to the works. The following provides a selection of these individuals and entities :

Company name:	.	Alexanders & Company + Alexanders, William & Co.
Address :		i) Steam saw mills - near Seamen's Reading Rooms, Penarth Dock - ( [298] 1891) ii) Canal Wharf, Dumballs Rd., Cardiff & Penarth Dock [132]
for supply of :		timber
cost book entries total :		£3,295 - 3s - 9d

Company name :	.	Douglas Bros.
Address :		not known - presumably Newcastle-upon-Tyne area
for supply of :		ironwork and cradle
cost book entries total :		£782 - 6s - 0d

Company name :	.	De Bergue + C. de Bergue & Company
Address :		i) Wauntreda Works, Whitchurch, Cardiff ii) Strangeways Iron Works, Manchester
for supply of :		pier shoes?
cost book entries total :		£5 - 4s - 0d
further reference :		Swing Bridge Connections Charles Louis Aime de Bergue (1807-1873)