The Advertiser has opened its archives to see what was making the news this week 25, 50 and 100 years ago. 25 years ago – June 4, 1999 ABOVE: More than 500 children, residents of neighbouring villages and civic heads were guests at an open day staged by the National Grid’s Staythorpe Substation. Highlight of the visit for pupils from St Peter’s Primary School, Farndon, and from Bleasby and Averham primary schools were performances of an educational roadshow written by science publicist Johnny Ball. • Chocolate maker Peel and Bowler Ltd of Newark has gone into voluntary liquidation with the los…