IINo 10 Upper Colliers Row Situated SE of Heolgerrig, some 500m W of the remains of the Ynysfach Iron Works and just W of the A470.
IINo 13 Upper Colliers Row Situated SE of Heolgerrig, some 500m W of the remains of the Ynysfach Iron Works and just W of the A470.
IINo 14 Upper Colliers Row Situated SE of Heolgerrig, some 500m W of the remains of the Ynysfach Iron Works and just W of the A470.
IINo 16 Gelli-deg Situated to the N of Swansea Road some 200m NW of its roundabout junction with the A470. The site is some 400m W of the site of the Cyfarthfa blast furnaces.
IINo 17 Gelli-deg Situated to the N of Swansea Road some 200m NW of its roundabout junction with the A470. The site is some 400m W of the site of the Cyfarthfa blast furnaces.
IINO 19 Gelli-deg Situated to the N of Swansea Road some 200m NW of its roundabout junction with the A470. The site is some 400m W of the site of the Cyfarthfa blast furnaces.
IINO 21 Gelli-deg Situated to the N of Swansea Road some 200m NW of its roundabout junction with the A470. The site is some 400m W of the site of the Cyfarthfa blast furnaces.
IINo 9 Upper Colliers Row, CF48 1UN Situated SE of Heolgerrig, some 500m W of the remains of the Ynysfach Iron Works and just W of the A470.
IINos 11-12 Upper Colliers Row Situated SE of Heolgerrig, some 500m W of the remains of the Ynysfach Iron Works and just W of the A470.
IINos 15-16 Upper Colliers Row Situated SE of Heolgerrig, some 500m W of the remains of the Ynysfach Iron Works and just W of the A470.
IINos 3-4 Uppier Colliers Row Situated SE of Heolgerrig, some 500m W of the remains of the Ynysfach Iron Works and just W of the A470.
IINos 5-6 Upper Colliers Row Situated SE of Heolgerrig, some 500m W of the remains ofthe Ynysfach Iron Works and just W of the A470.
IINos 7-8 Upper Colliers Row Situated SE of Heolgerrig, some 500m W of the remains of the Ynysfach Iron Works and just W of the A470.