Postcard, b/w, matt. Title, on reverse, "Shannon Power Scheme / Siemens Schuckert A.G. / Siemens Bauunion G.M.B.H. / Berlin / Blasting of Rock at Clonlara. Four 12m. / deep boreholes / (line) / T.C. Carroll & Sons, Stationers, Limerick". View, from trench, of blast, two sets of railway tracks in trench, earth and smoke rising. Sides of trench left and right. Sky in top half of photo. Margin around. R/ printed dark brown, vertical line division, number "1336" breaking centre of line. To right, heading, small, "Post Card", four dotted lines for address, solid line below lowest. Dotted outline for stamp inscribed "Printed / in / Germany / V 5129 28". Title and publisher in lower half of left side.