National Library of Wales catalogue number: vtls003368518
Author: Charles, Geoff, 1909-2002
Date: April 18, 1952
Abstract: Images of the Quarries at Aberllefenni, which employed fifty men, showing Mr Evan Ellis Evans and Mr Jack Arthur Williams (manager) in one of the caverns (gch02765), three quarrymen breaking a new level open underground (gch02766), David Morris Evans and Hugh David Davies splitting slates with their apprentice, Kenneth Owen (gch02767), and a general view of the quarry yard showing the workshop, tramway tracks and stacks of slates (gch02768); together with a group portrait of quarry workers (gch02764).
Part of: Casgliad Geoff Charles Collection,
Charles, Geoff, 1909-2002.
Notes:
Title assigned by cataloguer., A selection of the images have been published and appeared in Y Cymro, 18 April 1952.
Notes (reproduction):
Computer file. Aberystwyth : National Library of Wales, 2000-2002 (Geoff Charles digitisation project) Original, master file captured in uncompressed TIFF format. Minimal tonal adjustments using levels and curves in PhotoShop. Master files archived as pc format TIFFS. On-screen display files resized and adjusted for viewing on gamma 2.2 monitors in PhotoShop and saved in JPEG format. 1 image file; Heidelberg Nexscan F4100 capture device using Linocolor v6.0.4 software. Filter settings: light contour-0.5, dark countour-0.5, smoothnes-0.6, countour width-1.0, scan spot size-4.0. Target resolution for hi-res capture was 300dpi at a factor of 450% resulting in +/- 6000 x 5000 pixels; screen res:+/- 600 x 500 pixels at 72dpi; screen-res and thumbnail copies use jpeg compression at setting: 7 in Adobe Photoshop v6.0; 8 bit grayscale; hi-res TIFFs: Gray Gamma 1.8 icc profile embedded.
Notes (action):
2001 ; scanned. Reprographic Unit, National Library of Wales, Aberystwyth, Ceredigion ; capture device operator : Simon Evans.
